Add visibility attributes in runtime/entrypoints and runtime/native

Bug: 260881207
Test: presubmit
Test: abtd app_compat_drm
Test: abtd app_compat_top_100
Test: abtd app_compat_banking
Change-Id: I9481b7d876f6dd3a65cfc825b9b3f475c43131aa

97 files changed, 167 insertions, 100 deletions

diff --git a/runtime/entrypoints/entrypoint_utils-inl.h b/runtime/entrypoints/entrypoint_utils-inl.h
index 4a1dfba786..a854e0c5ac 100644
--- a/runtime/entrypoints/entrypoint_utils-inl.h
+++ b/runtime/entrypoints/entrypoint_utils-inl.h
@@ -47,7 +47,7 @@
 #include "thread.h"
 #include "well_known_classes.h"
 
-namespace art {
+namespace art HIDDEN {
 
 inline std::string GetResolvedMethodErrorString(ClassLinker* class_linker,
                                                 ArtMethod* inlined_method,
diff --git a/runtime/entrypoints/entrypoint_utils.cc b/runtime/entrypoints/entrypoint_utils.cc
index aa27df4dc5..96a2231930 100644
--- a/runtime/entrypoints/entrypoint_utils.cc
+++ b/runtime/entrypoints/entrypoint_utils.cc
@@ -43,7 +43,7 @@
 #include "scoped_thread_state_change-inl.h"
 #include "well_known_classes-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 void CheckReferenceResult(Handle<mirror::Object> o, Thread* self) {
   if (o == nullptr) {
diff --git a/runtime/entrypoints/entrypoint_utils.h b/runtime/entrypoints/entrypoint_utils.h
index cfa744d278..3dfeaae024 100644
--- a/runtime/entrypoints/entrypoint_utils.h
+++ b/runtime/entrypoints/entrypoint_utils.h
@@ -29,7 +29,7 @@
 #include "handle.h"
 #include "jvalue.h"
 
-namespace art {
+namespace art HIDDEN {
 
 namespace mirror {
 class Array;
diff --git a/runtime/entrypoints/jni/jni_entrypoints.cc b/runtime/entrypoints/jni/jni_entrypoints.cc
index 359614bf92..885764f180 100644
--- a/runtime/entrypoints/jni/jni_entrypoints.cc
+++ b/runtime/entrypoints/jni/jni_entrypoints.cc
@@ -33,7 +33,7 @@
 #include "stack_map.h"
 #include "thread.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static inline uint32_t GetInvokeStaticMethodIndex(ArtMethod* caller, uint32_t dex_pc)
     REQUIRES_SHARED(Locks::mutator_lock_) {
diff --git a/runtime/entrypoints/jni/jni_entrypoints.h b/runtime/entrypoints/jni/jni_entrypoints.h
index def9ddba73..4b515db50d 100644
--- a/runtime/entrypoints/jni/jni_entrypoints.h
+++ b/runtime/entrypoints/jni/jni_entrypoints.h
@@ -25,7 +25,7 @@
 #define JNI_ENTRYPOINT_OFFSET(ptr_size, x) \
     Thread::JniEntryPointOffset<ptr_size>(OFFSETOF_MEMBER(JniEntryPoints, x))
 
-namespace art {
+namespace art HIDDEN {
 
 // Pointers to functions that are called by JNI trampolines via thread-local storage.
 struct JniEntryPoints {
diff --git a/runtime/entrypoints/math_entrypoints.cc b/runtime/entrypoints/math_entrypoints.cc
index b0eaf1ed03..5db8dbfe9d 100644
--- a/runtime/entrypoints/math_entrypoints.cc
+++ b/runtime/entrypoints/math_entrypoints.cc
@@ -18,7 +18,7 @@
 
 #include "entrypoint_utils-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 extern "C" double art_l2d(int64_t l) {
   return static_cast<double>(l);
diff --git a/runtime/entrypoints/math_entrypoints_test.cc b/runtime/entrypoints/math_entrypoints_test.cc
index fe61f5dd11..337f9f0925 100644
--- a/runtime/entrypoints/math_entrypoints_test.cc
+++ b/runtime/entrypoints/math_entrypoints_test.cc
@@ -20,7 +20,7 @@
 
 #include "base/common_art_test.h"
 
-namespace art {
+namespace art HIDDEN {
 
 class MathEntrypointsTest : public CommonArtTest {};
 
diff --git a/runtime/entrypoints/quick/callee_save_frame.h b/runtime/entrypoints/quick/callee_save_frame.h
index 7d9b844b0c..81219234b8 100644
--- a/runtime/entrypoints/quick/callee_save_frame.h
+++ b/runtime/entrypoints/quick/callee_save_frame.h
@@ -32,7 +32,7 @@
 #include "arch/x86/callee_save_frame_x86.h"
 #include "arch/x86_64/callee_save_frame_x86_64.h"
 
-namespace art {
+namespace art HIDDEN {
 class ArtMethod;
 
 class ScopedQuickEntrypointChecks {
diff --git a/runtime/entrypoints/quick/quick_alloc_entrypoints.cc b/runtime/entrypoints/quick/quick_alloc_entrypoints.cc
index 7b3d84915a..82595ed636 100644
--- a/runtime/entrypoints/quick/quick_alloc_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_alloc_entrypoints.cc
@@ -27,7 +27,7 @@
 #include "mirror/object_array-inl.h"
 #include "mirror/string-alloc-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static constexpr bool kUseTlabFastPath = true;
 
diff --git a/runtime/entrypoints/quick/quick_alloc_entrypoints.h b/runtime/entrypoints/quick/quick_alloc_entrypoints.h
index c4d8a808b2..94f4a27691 100644
--- a/runtime/entrypoints/quick/quick_alloc_entrypoints.h
+++ b/runtime/entrypoints/quick/quick_alloc_entrypoints.h
@@ -21,7 +21,7 @@
 #include "gc/allocator_type.h"
 #include "quick_entrypoints.h"
 
-namespace art {
+namespace art HIDDEN {
 
 void ResetQuickAllocEntryPoints(QuickEntryPoints* qpoints);
 
diff --git a/runtime/entrypoints/quick/quick_cast_entrypoints.cc b/runtime/entrypoints/quick/quick_cast_entrypoints.cc
index 083d5786ce..a32c483431 100644
--- a/runtime/entrypoints/quick/quick_cast_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_cast_entrypoints.cc
@@ -17,7 +17,7 @@
 #include "mirror/class-inl.h"
 #include "mirror/object-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 // Assignable test for code, won't throw.  Null and equality tests already performed
 extern "C" size_t artIsAssignableFromCode(mirror::Class* klass, mirror::Class* ref_class)
diff --git a/runtime/entrypoints/quick/quick_default_externs.h b/runtime/entrypoints/quick/quick_default_externs.h
index cb3caac9ab..5119b27076 100644
--- a/runtime/entrypoints/quick/quick_default_externs.h
+++ b/runtime/entrypoints/quick/quick_default_externs.h
@@ -19,7 +19,7 @@
 
 #include <cstdint>
 
-namespace art {
+namespace art HIDDEN {
 namespace mirror {
 class Array;
 class Class;
diff --git a/runtime/entrypoints/quick/quick_default_init_entrypoints.h b/runtime/entrypoints/quick/quick_default_init_entrypoints.h
index ea077889ee..46840e60ed 100644
--- a/runtime/entrypoints/quick/quick_default_init_entrypoints.h
+++ b/runtime/entrypoints/quick/quick_default_init_entrypoints.h
@@ -24,7 +24,7 @@
 #include "quick_default_externs.h"
 #include "quick_entrypoints.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static void DefaultInitEntryPoints(JniEntryPoints* jpoints,
                                    QuickEntryPoints* qpoints,
diff --git a/runtime/entrypoints/quick/quick_deoptimization_entrypoints.cc b/runtime/entrypoints/quick/quick_deoptimization_entrypoints.cc
index 277bc7bf06..29060457fd 100644
--- a/runtime/entrypoints/quick/quick_deoptimization_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_deoptimization_entrypoints.cc
@@ -23,7 +23,7 @@
 #include "runtime.h"
 #include "thread.h"
 
-namespace art {
+namespace art HIDDEN {
 
 NO_RETURN static void artDeoptimizeImpl(Thread* self,
                                         DeoptimizationKind kind,
diff --git a/runtime/entrypoints/quick/quick_dexcache_entrypoints.cc b/runtime/entrypoints/quick/quick_dexcache_entrypoints.cc
index 9973d1aa47..f29143f79a 100644
--- a/runtime/entrypoints/quick/quick_dexcache_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_dexcache_entrypoints.cc
@@ -32,7 +32,7 @@
 #include "oat_file-inl.h"
 #include "runtime.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static void StoreObjectInBss(ArtMethod* outer_method,
                              const OatFile* oat_file,
diff --git a/runtime/entrypoints/quick/quick_entrypoints.h b/runtime/entrypoints/quick/quick_entrypoints.h
index 0e73c63828..fe01424c7c 100644
--- a/runtime/entrypoints/quick/quick_entrypoints.h
+++ b/runtime/entrypoints/quick/quick_entrypoints.h
@@ -27,7 +27,7 @@
 #define QUICK_ENTRYPOINT_OFFSET(ptr_size, x) \
     Thread::QuickEntryPointOffset<ptr_size>(OFFSETOF_MEMBER(QuickEntryPoints, x))
 
-namespace art {
+namespace art HIDDEN {
 
 namespace mirror {
 class Array;
diff --git a/runtime/entrypoints/quick/quick_entrypoints_enum.cc b/runtime/entrypoints/quick/quick_entrypoints_enum.cc
index 5387e44d9b..80d9313dcf 100644
--- a/runtime/entrypoints/quick/quick_entrypoints_enum.cc
+++ b/runtime/entrypoints/quick/quick_entrypoints_enum.cc
@@ -16,7 +16,7 @@
 
 #include "quick_entrypoints_enum.h"
 
-namespace art {
+namespace art HIDDEN {
 
 bool EntrypointRequiresStackMap(QuickEntrypointEnum trampoline) {
   // Entrypoints that do not require a stackmap. In general leaf methods
diff --git a/runtime/entrypoints/quick/quick_entrypoints_enum.h b/runtime/entrypoints/quick/quick_entrypoints_enum.h
index 017cba68ea..c84ca20d56 100644
--- a/runtime/entrypoints/quick/quick_entrypoints_enum.h
+++ b/runtime/entrypoints/quick/quick_entrypoints_enum.h
@@ -20,7 +20,7 @@
 #include "quick_entrypoints.h"
 #include "thread.h"
 
-namespace art {
+namespace art HIDDEN {
 
 // Define an enum for the entrypoints. Names are prepended a 'kQuick'.
 enum QuickEntrypointEnum {  // NOLINT(whitespace/braces)
diff --git a/runtime/entrypoints/quick/quick_field_entrypoints.cc b/runtime/entrypoints/quick/quick_field_entrypoints.cc
index edf58faf6a..39b21ead02 100644
--- a/runtime/entrypoints/quick/quick_field_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_field_entrypoints.cc
@@ -26,7 +26,7 @@
 #include "mirror/class-inl.h"
 #include "mirror/object_reference.h"
 
-namespace art {
+namespace art HIDDEN {
 
 // Fast path field resolution that can't initialize classes or throw exceptions.
 inline ArtField* FindFieldFast(uint32_t field_idx,
diff --git a/runtime/entrypoints/quick/quick_fillarray_entrypoints.cc b/runtime/entrypoints/quick/quick_fillarray_entrypoints.cc
index 5b7fe0ccf4..b87d81501b 100644
--- a/runtime/entrypoints/quick/quick_fillarray_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_fillarray_entrypoints.cc
@@ -19,7 +19,7 @@
 #include "entrypoints/entrypoint_utils.h"
 #include "mirror/array.h"
 
-namespace art {
+namespace art HIDDEN {
 
 /*
  * Handle fill array data by copying appropriate part of dex file into array.
diff --git a/runtime/entrypoints/quick/quick_jni_entrypoints.cc b/runtime/entrypoints/quick/quick_jni_entrypoints.cc
index 06c27b37c8..c9ec7a7dec 100644
--- a/runtime/entrypoints/quick/quick_jni_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_jni_entrypoints.cc
@@ -36,7 +36,7 @@
     }                                                    \
   }
 
-namespace art {
+namespace art HIDDEN {
 
 extern "C" int artMethodExitHook(Thread* self,
                                  ArtMethod* method,
diff --git a/runtime/entrypoints/quick/quick_lock_entrypoints.cc b/runtime/entrypoints/quick/quick_lock_entrypoints.cc
index 87286cf651..402f8f613c 100644
--- a/runtime/entrypoints/quick/quick_lock_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_lock_entrypoints.cc
@@ -18,7 +18,7 @@
 #include "common_throws.h"
 #include "mirror/object-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 extern "C" int artLockObjectFromCode(mirror::Object* obj, Thread* self)
     NO_THREAD_SAFETY_ANALYSIS
diff --git a/runtime/entrypoints/quick/quick_string_builder_append_entrypoints.cc b/runtime/entrypoints/quick/quick_string_builder_append_entrypoints.cc
index 9afaf439dc..9e5fe1c826 100644
--- a/runtime/entrypoints/quick/quick_string_builder_append_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_string_builder_append_entrypoints.cc
@@ -19,7 +19,7 @@
 #include "string_builder_append.h"
 #include "obj_ptr-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 extern "C" mirror::String* artStringBuilderAppend(uint32_t format,
                                                   const uint32_t* args,
diff --git a/runtime/entrypoints/quick/quick_thread_entrypoints.cc b/runtime/entrypoints/quick/quick_thread_entrypoints.cc
index 5dca58ab04..53e14d0d7a 100644
--- a/runtime/entrypoints/quick/quick_thread_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_thread_entrypoints.cc
@@ -19,7 +19,7 @@
 #include "runtime.h"
 #include "thread-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 extern "C" void artDeoptimizeIfNeeded(Thread* self, uintptr_t result, bool is_ref)
     REQUIRES_SHARED(Locks::mutator_lock_) {
diff --git a/runtime/entrypoints/quick/quick_throw_entrypoints.cc b/runtime/entrypoints/quick/quick_throw_entrypoints.cc
index 202b031bca..781f3e549d 100644
--- a/runtime/entrypoints/quick/quick_throw_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_throw_entrypoints.cc
@@ -24,7 +24,7 @@
 #include "thread.h"
 #include "well_known_classes.h"
 
-namespace art {
+namespace art HIDDEN {
 
 // Deliver an exception that's pending on thread helping set up a callee save frame on the way.
 extern "C" NO_RETURN void artDeliverPendingExceptionFromCode(Thread* self)
diff --git a/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc b/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
index 664cf622a8..d87388e86b 100644
--- a/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
@@ -58,7 +58,7 @@
 #include "var_handles.h"
 #include "well_known_classes.h"
 
-namespace art {
+namespace art HIDDEN {
 
 extern "C" NO_RETURN void artDeoptimizeFromCompiledCode(DeoptimizationKind kind, Thread* self);
 extern "C" NO_RETURN void artDeoptimize(Thread* self, bool skip_method_exit_callbacks);
@@ -943,9 +943,8 @@ class GetQuickReferenceArgumentAtVisitor final : public QuickArgumentVisitor {
 
 // Returning reference argument at position `arg_pos` in Quick stack frame at address `sp`.
 // NOTE: Only used for testing purposes.
-extern "C" StackReference<mirror::Object>* artQuickGetProxyReferenceArgumentAt(size_t arg_pos,
-                                                                               ArtMethod** sp)
-    REQUIRES_SHARED(Locks::mutator_lock_) {
+EXPORT extern "C" StackReference<mirror::Object>* artQuickGetProxyReferenceArgumentAt(
+    size_t arg_pos, ArtMethod** sp) REQUIRES_SHARED(Locks::mutator_lock_) {
   ArtMethod* proxy_method = *sp;
   ArtMethod* non_proxy_method = proxy_method->GetInterfaceMethodIfProxy(kRuntimePointerSize);
   CHECK(!non_proxy_method->IsStatic())
diff --git a/runtime/entrypoints/quick/quick_trampoline_entrypoints_test.cc b/runtime/entrypoints/quick/quick_trampoline_entrypoints_test.cc
index 0f0fb69f4b..14e5a7cdfd 100644
--- a/runtime/entrypoints/quick/quick_trampoline_entrypoints_test.cc
+++ b/runtime/entrypoints/quick/quick_trampoline_entrypoints_test.cc
@@ -22,7 +22,7 @@
 #include "common_runtime_test.h"
 #include "quick/quick_method_frame_info.h"
 
-namespace art {
+namespace art HIDDEN {
 
 class QuickTrampolineEntrypointsTest : public CommonRuntimeTest {
  protected:
diff --git a/runtime/native/dalvik_system_BaseDexClassLoader.cc b/runtime/native/dalvik_system_BaseDexClassLoader.cc
index a4f702c28d..f9a1aba022 100644
--- a/runtime/native/dalvik_system_BaseDexClassLoader.cc
+++ b/runtime/native/dalvik_system_BaseDexClassLoader.cc
@@ -25,7 +25,7 @@
 #include "nativehelper/jni_macros.h"
 #include "thread-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static bool append_string(Thread* self,
                           Handle<mirror::ObjectArray<mirror::String>> array,
diff --git a/runtime/native/dalvik_system_BaseDexClassLoader.h b/runtime/native/dalvik_system_BaseDexClassLoader.h
index 4ec03ef7a6..5a18b18b50 100644
--- a/runtime/native/dalvik_system_BaseDexClassLoader.h
+++ b/runtime/native/dalvik_system_BaseDexClassLoader.h
@@ -20,7 +20,9 @@
 #include <jni.h>
 #include <unistd.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_dalvik_system_BaseDexClassLoader(JNIEnv* env);
 
diff --git a/runtime/native/dalvik_system_DexFile.cc b/runtime/native/dalvik_system_DexFile.cc
index f602f73630..f1c5d541a9 100644
--- a/runtime/native/dalvik_system_DexFile.cc
+++ b/runtime/native/dalvik_system_DexFile.cc
@@ -62,7 +62,7 @@
 #include <sys/system_properties.h>
 #endif  // ART_TARGET_ANDROID
 
-namespace art {
+namespace art HIDDEN {
 
 // Should be the same as dalvik.system.DexFile.ENFORCE_READ_ONLY_JAVA_DCL
 static constexpr uint64_t kEnforceReadOnlyJavaDcl = 218865702;
diff --git a/runtime/native/dalvik_system_DexFile.h b/runtime/native/dalvik_system_DexFile.h
index 77d219dfad..c22b83d6e8 100644
--- a/runtime/native/dalvik_system_DexFile.h
+++ b/runtime/native/dalvik_system_DexFile.h
@@ -20,7 +20,9 @@
 #include <jni.h>
 #include <unistd.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 constexpr size_t kOatFileIndex = 0;
 constexpr size_t kDexFileIndexStart = 1;
diff --git a/runtime/native/dalvik_system_VMDebug.cc b/runtime/native/dalvik_system_VMDebug.cc
index cf2b25d6a2..137b04fede 100644
--- a/runtime/native/dalvik_system_VMDebug.cc
+++ b/runtime/native/dalvik_system_VMDebug.cc
@@ -51,7 +51,7 @@
 #include "thread-inl.h"
 #include "trace.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jobjectArray VMDebug_getVmFeatureList(JNIEnv* env, jclass) {
   ScopedObjectAccess soa(Thread::ForEnv(env));
diff --git a/runtime/native/dalvik_system_VMDebug.h b/runtime/native/dalvik_system_VMDebug.h
index b7eb8a8379..6d53fbea9d 100644
--- a/runtime/native/dalvik_system_VMDebug.h
+++ b/runtime/native/dalvik_system_VMDebug.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_dalvik_system_VMDebug(JNIEnv* env);
 
diff --git a/runtime/native/dalvik_system_VMRuntime.cc b/runtime/native/dalvik_system_VMRuntime.cc
index f1561a2530..3f71c3182e 100644
--- a/runtime/native/dalvik_system_VMRuntime.cc
+++ b/runtime/native/dalvik_system_VMRuntime.cc
@@ -66,7 +66,7 @@ extern "C" void android_set_application_target_sdk_version(uint32_t version);
 #include "thread-inl.h"
 #include "thread_list.h"
 
-namespace art {
+namespace art HIDDEN {
 
 using android::base::StringPrintf;
 
diff --git a/runtime/native/dalvik_system_VMRuntime.h b/runtime/native/dalvik_system_VMRuntime.h
index 795caa5ec6..10f41ad442 100644
--- a/runtime/native/dalvik_system_VMRuntime.h
+++ b/runtime/native/dalvik_system_VMRuntime.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_dalvik_system_VMRuntime(JNIEnv* env);
 
diff --git a/runtime/native/dalvik_system_VMStack.cc b/runtime/native/dalvik_system_VMStack.cc
index 596b2eb435..599bdb9e4b 100644
--- a/runtime/native/dalvik_system_VMStack.cc
+++ b/runtime/native/dalvik_system_VMStack.cc
@@ -32,7 +32,7 @@
 #include "scoped_thread_state_change-inl.h"
 #include "thread_list.h"
 
-namespace art {
+namespace art HIDDEN {
 
 template <typename T,
           typename ResultT =
diff --git a/runtime/native/dalvik_system_VMStack.h b/runtime/native/dalvik_system_VMStack.h
index 5638f99ec1..c7a62ad46a 100644
--- a/runtime/native/dalvik_system_VMStack.h
+++ b/runtime/native/dalvik_system_VMStack.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_dalvik_system_VMStack(JNIEnv* env);
 
diff --git a/runtime/native/dalvik_system_ZygoteHooks.cc b/runtime/native/dalvik_system_ZygoteHooks.cc
index dd44e2ec4b..cc47032bd4 100644
--- a/runtime/native/dalvik_system_ZygoteHooks.cc
+++ b/runtime/native/dalvik_system_ZygoteHooks.cc
@@ -47,7 +47,7 @@
 
 #include <sys/resource.h>
 
-namespace art {
+namespace art HIDDEN {
 
 // Set to true to always determine the non-debuggable classes even if we would not allow a debugger
 // to actually attach.
diff --git a/runtime/native/dalvik_system_ZygoteHooks.h b/runtime/native/dalvik_system_ZygoteHooks.h
index ca0658d318..fbd14c0fcc 100644
--- a/runtime/native/dalvik_system_ZygoteHooks.h
+++ b/runtime/native/dalvik_system_ZygoteHooks.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_dalvik_system_ZygoteHooks(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_Class.cc b/runtime/native/java_lang_Class.cc
index 2abc4935e0..1dc74e0db2 100644
--- a/runtime/native/java_lang_Class.cc
+++ b/runtime/native/java_lang_Class.cc
@@ -56,7 +56,7 @@
 #include "scoped_thread_state_change-inl.h"
 #include "well_known_classes-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static std::function<hiddenapi::AccessContext()> GetHiddenapiAccessContextFunction(Thread* self) {
   return [=]() REQUIRES_SHARED(Locks::mutator_lock_) {
diff --git a/runtime/native/java_lang_Class.h b/runtime/native/java_lang_Class.h
index 8f769c39e9..aaa9b669d0 100644
--- a/runtime/native/java_lang_Class.h
+++ b/runtime/native/java_lang_Class.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_Class(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_Object.cc b/runtime/native/java_lang_Object.cc
index 8fc10d1114..5649b2cc5b 100644
--- a/runtime/native/java_lang_Object.cc
+++ b/runtime/native/java_lang_Object.cc
@@ -24,7 +24,7 @@
 #include "native_util.h"
 #include "scoped_fast_native_object_access-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jobject Object_internalClone(JNIEnv* env, jobject java_this) {
   ScopedFastNativeObjectAccess soa(env);
diff --git a/runtime/native/java_lang_Object.h b/runtime/native/java_lang_Object.h
index c860571904..1ea2c05d19 100644
--- a/runtime/native/java_lang_Object.h
+++ b/runtime/native/java_lang_Object.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_Object(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_StackStreamFactory.cc b/runtime/native/java_lang_StackStreamFactory.cc
index f876c1014b..24d903047d 100644
--- a/runtime/native/java_lang_StackStreamFactory.cc
+++ b/runtime/native/java_lang_StackStreamFactory.cc
@@ -23,7 +23,7 @@
 #include "scoped_fast_native_object_access-inl.h"
 #include "thread.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jobject StackStreamFactory_nativeGetStackAnchor(JNIEnv* env, jclass) {
   ScopedFastNativeObjectAccess soa(env);
diff --git a/runtime/native/java_lang_StackStreamFactory.h b/runtime/native/java_lang_StackStreamFactory.h
index 2216871ebf..31b3c9528d 100644
--- a/runtime/native/java_lang_StackStreamFactory.h
+++ b/runtime/native/java_lang_StackStreamFactory.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_StackStreamFactory(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_String.cc b/runtime/native/java_lang_String.cc
index f70a188e79..1ba0028fd3 100644
--- a/runtime/native/java_lang_String.cc
+++ b/runtime/native/java_lang_String.cc
@@ -31,7 +31,7 @@
 #include "scoped_thread_state_change-inl.h"
 #include "verify_object.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jchar String_charAt(JNIEnv* env, jobject java_this, jint index) {
   ScopedFastNativeObjectAccess soa(env);
diff --git a/runtime/native/java_lang_String.h b/runtime/native/java_lang_String.h
index 357eb3daf9..a78fdcec72 100644
--- a/runtime/native/java_lang_String.h
+++ b/runtime/native/java_lang_String.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_String(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_StringFactory.cc b/runtime/native/java_lang_StringFactory.cc
index 2fbebc0941..e6c03dbcf2 100644
--- a/runtime/native/java_lang_StringFactory.cc
+++ b/runtime/native/java_lang_StringFactory.cc
@@ -28,7 +28,7 @@
 #include "scoped_fast_native_object_access-inl.h"
 #include "scoped_thread_state_change-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jstring StringFactory_newStringFromBytes(JNIEnv* env, jclass, jbyteArray java_data,
                                                 jint high, jint offset, jint byte_count) {
diff --git a/runtime/native/java_lang_StringFactory.h b/runtime/native/java_lang_StringFactory.h
index c476ad3db9..cdc19df87d 100644
--- a/runtime/native/java_lang_StringFactory.h
+++ b/runtime/native/java_lang_StringFactory.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_StringFactory(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_System.cc b/runtime/native/java_lang_System.cc
index 63cbd2c815..203d98dc4c 100644
--- a/runtime/native/java_lang_System.cc
+++ b/runtime/native/java_lang_System.cc
@@ -29,7 +29,7 @@
 #include "native_util.h"
 #include "scoped_fast_native_object_access-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 /*
  * We make guarantees about the atomicity of accesses to primitive variables.  These guarantees
diff --git a/runtime/native/java_lang_System.h b/runtime/native/java_lang_System.h
index e371fa5db4..a52972711d 100644
--- a/runtime/native/java_lang_System.h
+++ b/runtime/native/java_lang_System.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_System(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_Thread.cc b/runtime/native/java_lang_Thread.cc
index fd67a0a7fa..65e3009c0f 100644
--- a/runtime/native/java_lang_Thread.cc
+++ b/runtime/native/java_lang_Thread.cc
@@ -29,7 +29,7 @@
 #include "thread_list.h"
 #include "verify_object.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jobject Thread_currentThread(JNIEnv* env, jclass) {
   ScopedFastNativeObjectAccess soa(env);
diff --git a/runtime/native/java_lang_Thread.h b/runtime/native/java_lang_Thread.h
index 7700ce29a8..ef880a9904 100644
--- a/runtime/native/java_lang_Thread.h
+++ b/runtime/native/java_lang_Thread.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_Thread(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_Throwable.cc b/runtime/native/java_lang_Throwable.cc
index b89e287481..091ad03bb2 100644
--- a/runtime/native/java_lang_Throwable.cc
+++ b/runtime/native/java_lang_Throwable.cc
@@ -23,7 +23,7 @@
 #include "scoped_fast_native_object_access-inl.h"
 #include "thread.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jobject Throwable_nativeFillInStackTrace(JNIEnv* env, jclass) {
   ScopedFastNativeObjectAccess soa(env);
diff --git a/runtime/native/java_lang_Throwable.h b/runtime/native/java_lang_Throwable.h
index f9aea84abe..6758e48951 100644
--- a/runtime/native/java_lang_Throwable.h
+++ b/runtime/native/java_lang_Throwable.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_Throwable(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_VMClassLoader.cc b/runtime/native/java_lang_VMClassLoader.cc
index 4dad46fb8c..ba1fde00d3 100644
--- a/runtime/native/java_lang_VMClassLoader.cc
+++ b/runtime/native/java_lang_VMClassLoader.cc
@@ -38,7 +38,7 @@
 #include "thread-inl.h"
 #include "well_known_classes-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 // A class so we can be friends with ClassLinker and access internal methods.
 class VMClassLoader {
diff --git a/runtime/native/java_lang_VMClassLoader.h b/runtime/native/java_lang_VMClassLoader.h
index bf8d94f5a9..adf0c0aeac 100644
--- a/runtime/native/java_lang_VMClassLoader.h
+++ b/runtime/native/java_lang_VMClassLoader.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_VMClassLoader(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_invoke_MethodHandle.cc b/runtime/native/java_lang_invoke_MethodHandle.cc
index 5309a28a09..819656fd05 100644
--- a/runtime/native/java_lang_invoke_MethodHandle.cc
+++ b/runtime/native/java_lang_invoke_MethodHandle.cc
@@ -27,7 +27,7 @@
 #include "native_util.h"
 #include "scoped_thread_state_change-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static void MethodHandle_invokeExactWithFrame(JNIEnv* env, jobject thiz, jobject arguments) {
   ScopedObjectAccess soa(env);
diff --git a/runtime/native/java_lang_invoke_MethodHandle.h b/runtime/native/java_lang_invoke_MethodHandle.h
index 1f38ac7b27..f46f32426b 100644
--- a/runtime/native/java_lang_invoke_MethodHandle.h
+++ b/runtime/native/java_lang_invoke_MethodHandle.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_invoke_MethodHandle(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_invoke_MethodHandleImpl.cc b/runtime/native/java_lang_invoke_MethodHandleImpl.cc
index 00ce01f11a..ccd3370ff7 100644
--- a/runtime/native/java_lang_invoke_MethodHandleImpl.cc
+++ b/runtime/native/java_lang_invoke_MethodHandleImpl.cc
@@ -28,7 +28,7 @@
 #include "runtime.h"
 #include "scoped_thread_state_change-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jobject MethodHandleImpl_getMemberInternal(JNIEnv* env, jobject thiz) {
   ScopedObjectAccess soa(env);
diff --git a/runtime/native/java_lang_invoke_MethodHandleImpl.h b/runtime/native/java_lang_invoke_MethodHandleImpl.h
index 0e50371697..49d4c2c9ec 100644
--- a/runtime/native/java_lang_invoke_MethodHandleImpl.h
+++ b/runtime/native/java_lang_invoke_MethodHandleImpl.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_invoke_MethodHandleImpl(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_ref_FinalizerReference.cc b/runtime/native/java_lang_ref_FinalizerReference.cc
index 535b243411..52f6f734d9 100644
--- a/runtime/native/java_lang_ref_FinalizerReference.cc
+++ b/runtime/native/java_lang_ref_FinalizerReference.cc
@@ -26,7 +26,7 @@
 #include "native_util.h"
 #include "scoped_fast_native_object_access-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jboolean FinalizerReference_makeCircularListIfUnenqueued(JNIEnv* env, jobject javaThis) {
   ScopedFastNativeObjectAccess soa(env);
diff --git a/runtime/native/java_lang_ref_FinalizerReference.h b/runtime/native/java_lang_ref_FinalizerReference.h
index 848a7aded6..13d1a12c34 100644
--- a/runtime/native/java_lang_ref_FinalizerReference.h
+++ b/runtime/native/java_lang_ref_FinalizerReference.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_ref_FinalizerReference(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_ref_Reference.cc b/runtime/native/java_lang_ref_Reference.cc
index bd7235e14f..4c411c8db4 100644
--- a/runtime/native/java_lang_ref_Reference.cc
+++ b/runtime/native/java_lang_ref_Reference.cc
@@ -26,7 +26,7 @@
 #include "native_util.h"
 #include "scoped_fast_native_object_access-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jobject Reference_getReferent(JNIEnv* env, jobject javaThis) {
   ScopedFastNativeObjectAccess soa(env);
diff --git a/runtime/native/java_lang_ref_Reference.h b/runtime/native/java_lang_ref_Reference.h
index 0cbf11646d..cc75069657 100644
--- a/runtime/native/java_lang_ref_Reference.h
+++ b/runtime/native/java_lang_ref_Reference.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_ref_Reference(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_reflect_Array.cc b/runtime/native/java_lang_reflect_Array.cc
index ff94593cdf..9ac6e614b6 100644
--- a/runtime/native/java_lang_reflect_Array.cc
+++ b/runtime/native/java_lang_reflect_Array.cc
@@ -29,7 +29,7 @@
 #include "native_util.h"
 #include "scoped_fast_native_object_access-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jobject Array_createMultiArray(
     JNIEnv* env, jclass, jclass javaElementClass, jintArray javaDimArray) {
diff --git a/runtime/native/java_lang_reflect_Array.h b/runtime/native/java_lang_reflect_Array.h
index 805bf7992a..35b87b7af4 100644
--- a/runtime/native/java_lang_reflect_Array.h
+++ b/runtime/native/java_lang_reflect_Array.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_reflect_Array(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_reflect_Constructor.cc b/runtime/native/java_lang_reflect_Constructor.cc
index 98afddc260..f9278ab0d6 100644
--- a/runtime/native/java_lang_reflect_Constructor.cc
+++ b/runtime/native/java_lang_reflect_Constructor.cc
@@ -34,7 +34,7 @@
 #include "reflection.h"
 #include "scoped_fast_native_object_access-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jobjectArray Constructor_getExceptionTypes(JNIEnv* env, jobject javaMethod) {
   ScopedFastNativeObjectAccess soa(env);
diff --git a/runtime/native/java_lang_reflect_Constructor.h b/runtime/native/java_lang_reflect_Constructor.h
index 7baae978e6..9c36ef4fed 100644
--- a/runtime/native/java_lang_reflect_Constructor.h
+++ b/runtime/native/java_lang_reflect_Constructor.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_reflect_Constructor(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_reflect_Executable.cc b/runtime/native/java_lang_reflect_Executable.cc
index 87c9f6c341..3f3b648ecf 100644
--- a/runtime/native/java_lang_reflect_Executable.cc
+++ b/runtime/native/java_lang_reflect_Executable.cc
@@ -35,7 +35,7 @@
 #include "scoped_fast_native_object_access-inl.h"
 #include "well_known_classes.h"
 
-namespace art {
+namespace art HIDDEN {
 
 using android::base::StringPrintf;
 
diff --git a/runtime/native/java_lang_reflect_Executable.h b/runtime/native/java_lang_reflect_Executable.h
index 0cfed62e49..05b0a234e0 100644
--- a/runtime/native/java_lang_reflect_Executable.h
+++ b/runtime/native/java_lang_reflect_Executable.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_reflect_Executable(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_reflect_Field.cc b/runtime/native/java_lang_reflect_Field.cc
index f2603d4c48..622b514ea3 100644
--- a/runtime/native/java_lang_reflect_Field.cc
+++ b/runtime/native/java_lang_reflect_Field.cc
@@ -37,7 +37,7 @@
 #include "scoped_fast_native_object_access-inl.h"
 #include "well_known_classes.h"
 
-namespace art {
+namespace art HIDDEN {
 
 using android::base::StringPrintf;
 
diff --git a/runtime/native/java_lang_reflect_Field.h b/runtime/native/java_lang_reflect_Field.h
index 1739711de8..b5368b97f0 100644
--- a/runtime/native/java_lang_reflect_Field.h
+++ b/runtime/native/java_lang_reflect_Field.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_reflect_Field(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_reflect_Method.cc b/runtime/native/java_lang_reflect_Method.cc
index 5f02ad0fd9..8cbc070eee 100644
--- a/runtime/native/java_lang_reflect_Method.cc
+++ b/runtime/native/java_lang_reflect_Method.cc
@@ -32,7 +32,7 @@
 #include "reflection.h"
 #include "scoped_fast_native_object_access-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jobject Method_getDefaultValue(JNIEnv* env, jobject javaMethod) {
   ScopedFastNativeObjectAccess soa(env);
diff --git a/runtime/native/java_lang_reflect_Method.h b/runtime/native/java_lang_reflect_Method.h
index 3a93cd05d9..4b48ced9f4 100644
--- a/runtime/native/java_lang_reflect_Method.h
+++ b/runtime/native/java_lang_reflect_Method.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_reflect_Method(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_reflect_Parameter.cc b/runtime/native/java_lang_reflect_Parameter.cc
index 263a56796f..fe9e4e3cbf 100644
--- a/runtime/native/java_lang_reflect_Parameter.cc
+++ b/runtime/native/java_lang_reflect_Parameter.cc
@@ -28,7 +28,7 @@
 #include "native_util.h"
 #include "scoped_fast_native_object_access-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 using android::base::StringPrintf;
 
diff --git a/runtime/native/java_lang_reflect_Parameter.h b/runtime/native/java_lang_reflect_Parameter.h
index f6322b146f..97873fbfaf 100644
--- a/runtime/native/java_lang_reflect_Parameter.h
+++ b/runtime/native/java_lang_reflect_Parameter.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_reflect_Parameter(JNIEnv* env);
 
diff --git a/runtime/native/java_lang_reflect_Proxy.cc b/runtime/native/java_lang_reflect_Proxy.cc
index f723ed223d..a89f8274f8 100644
--- a/runtime/native/java_lang_reflect_Proxy.cc
+++ b/runtime/native/java_lang_reflect_Proxy.cc
@@ -27,7 +27,7 @@
 #include "scoped_fast_native_object_access-inl.h"
 #include "verify_object.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jclass Proxy_generateProxy(JNIEnv* env, jclass, jstring name, jobjectArray interfaces,
                                   jobject loader, jobjectArray methods, jobjectArray throws) {
diff --git a/runtime/native/java_lang_reflect_Proxy.h b/runtime/native/java_lang_reflect_Proxy.h
index e25f0f76b6..e6b3f241c7 100644
--- a/runtime/native/java_lang_reflect_Proxy.h
+++ b/runtime/native/java_lang_reflect_Proxy.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_lang_reflect_Proxy(JNIEnv* env);
 
diff --git a/runtime/native/java_util_concurrent_atomic_AtomicLong.cc b/runtime/native/java_util_concurrent_atomic_AtomicLong.cc
index fa288edcb8..3f4c609432 100644
--- a/runtime/native/java_util_concurrent_atomic_AtomicLong.cc
+++ b/runtime/native/java_util_concurrent_atomic_AtomicLong.cc
@@ -24,7 +24,7 @@
 #include "jni/jni_internal.h"
 #include "native_util.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jboolean AtomicLong_VMSupportsCS8(JNIEnv*, jclass) {
   return QuasiAtomic::LongAtomicsUseMutexes(kRuntimeISA) ? JNI_FALSE : JNI_TRUE;
diff --git a/runtime/native/java_util_concurrent_atomic_AtomicLong.h b/runtime/native/java_util_concurrent_atomic_AtomicLong.h
index 990dc861ff..de442ed39b 100644
--- a/runtime/native/java_util_concurrent_atomic_AtomicLong.h
+++ b/runtime/native/java_util_concurrent_atomic_AtomicLong.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_java_util_concurrent_atomic_AtomicLong(JNIEnv* env);
 
diff --git a/runtime/native/jdk_internal_misc_Unsafe.cc b/runtime/native/jdk_internal_misc_Unsafe.cc
index 9b2021d176..10c6b2da4f 100644
--- a/runtime/native/jdk_internal_misc_Unsafe.cc
+++ b/runtime/native/jdk_internal_misc_Unsafe.cc
@@ -36,7 +36,7 @@
 #include "scoped_fast_native_object_access-inl.h"
 #include "well_known_classes-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 namespace {
   // Checks a JNI argument `size` fits inside a size_t and throws a RuntimeException if not (see
diff --git a/runtime/native/jdk_internal_misc_Unsafe.h b/runtime/native/jdk_internal_misc_Unsafe.h
index 779cd5fb3e..61b377bbfa 100644
--- a/runtime/native/jdk_internal_misc_Unsafe.h
+++ b/runtime/native/jdk_internal_misc_Unsafe.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_jdk_internal_misc_Unsafe(JNIEnv* env);
 
diff --git a/runtime/native/libcore_io_Memory.cc b/runtime/native/libcore_io_Memory.cc
index 5e38280259..66a16ed0ad 100644
--- a/runtime/native/libcore_io_Memory.cc
+++ b/runtime/native/libcore_io_Memory.cc
@@ -25,7 +25,7 @@
 #include "nativehelper/scoped_primitive_array.h"
 #include "scoped_fast_native_object_access-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 // Use packed structures for access to unaligned data on targets with alignment restrictions.
 // The compiler will generate appropriate code to access these structures without
diff --git a/runtime/native/libcore_io_Memory.h b/runtime/native/libcore_io_Memory.h
index 8c8a2ec17c..bf60986be4 100644
--- a/runtime/native/libcore_io_Memory.h
+++ b/runtime/native/libcore_io_Memory.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_libcore_io_Memory(JNIEnv* env);
 
diff --git a/runtime/native/libcore_util_CharsetUtils.cc b/runtime/native/libcore_util_CharsetUtils.cc
index 46f8993a10..b497f1092d 100644
--- a/runtime/native/libcore_util_CharsetUtils.cc
+++ b/runtime/native/libcore_util_CharsetUtils.cc
@@ -28,7 +28,7 @@
 #include "nativehelper/jni_macros.h"
 #include "scoped_fast_native_object_access-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static void CharsetUtils_asciiBytesToChars(JNIEnv* env, jclass, jbyteArray javaBytes, jint offset,
                                            jint length, jcharArray javaChars) {
diff --git a/runtime/native/libcore_util_CharsetUtils.h b/runtime/native/libcore_util_CharsetUtils.h
index 3518bdb6f7..eaafcab30e 100644
--- a/runtime/native/libcore_util_CharsetUtils.h
+++ b/runtime/native/libcore_util_CharsetUtils.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_libcore_util_CharsetUtils(JNIEnv* env);
 
diff --git a/runtime/native/native_util.h b/runtime/native/native_util.h
index 784dba319e..f399359b11 100644
--- a/runtime/native/native_util.h
+++ b/runtime/native/native_util.h
@@ -23,7 +23,7 @@
 #include "base/macros.h"
 #include "nativehelper/scoped_local_ref.h"
 
-namespace art {
+namespace art HIDDEN {
 
 ALWAYS_INLINE inline void RegisterNativeMethodsInternal(JNIEnv* env,
                                                         const char* jni_class_name,
diff --git a/runtime/native/org_apache_harmony_dalvik_ddmc_DdmServer.cc b/runtime/native/org_apache_harmony_dalvik_ddmc_DdmServer.cc
index 419aed8578..b2e94f90cc 100644
--- a/runtime/native/org_apache_harmony_dalvik_ddmc_DdmServer.cc
+++ b/runtime/native/org_apache_harmony_dalvik_ddmc_DdmServer.cc
@@ -26,7 +26,7 @@
 #include "nativehelper/scoped_primitive_array.h"
 #include "scoped_fast_native_object_access-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static void DdmServer_nativeSendChunk(JNIEnv* env, jclass, jint type,
                                       jbyteArray javaData, jint offset, jint length) {
diff --git a/runtime/native/org_apache_harmony_dalvik_ddmc_DdmServer.h b/runtime/native/org_apache_harmony_dalvik_ddmc_DdmServer.h
index 9a4645c1aa..fc5cfc9b59 100644
--- a/runtime/native/org_apache_harmony_dalvik_ddmc_DdmServer.h
+++ b/runtime/native/org_apache_harmony_dalvik_ddmc_DdmServer.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_org_apache_harmony_dalvik_ddmc_DdmServer(JNIEnv* env);
 
diff --git a/runtime/native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.cc b/runtime/native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.cc
index f20cd281e8..6da4529289 100644
--- a/runtime/native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.cc
+++ b/runtime/native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.cc
@@ -31,7 +31,7 @@
 #include "scoped_fast_native_object_access-inl.h"
 #include "thread_list.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static void DdmVmInternal_setRecentAllocationsTrackingEnabled(JNIEnv*, jclass, jboolean enable) {
   Dbg::SetAllocTrackingEnabled(enable);
diff --git a/runtime/native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.h b/runtime/native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.h
index 736e4c8793..5484f3682c 100644
--- a/runtime/native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.h
+++ b/runtime/native/org_apache_harmony_dalvik_ddmc_DdmVmInternal.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_org_apache_harmony_dalvik_ddmc_DdmVmInternal(JNIEnv* env);
 
diff --git a/runtime/native/scoped_fast_native_object_access-inl.h b/runtime/native/scoped_fast_native_object_access-inl.h
index 0b8ad117d2..cd1a0b26d7 100644
--- a/runtime/native/scoped_fast_native_object_access-inl.h
+++ b/runtime/native/scoped_fast_native_object_access-inl.h
@@ -22,7 +22,7 @@
 #include "art_method.h"
 #include "scoped_thread_state_change-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 inline ScopedFastNativeObjectAccess::ScopedFastNativeObjectAccess(JNIEnv* env)
     : ScopedObjectAccessAlreadyRunnable(env) {
diff --git a/runtime/native/scoped_fast_native_object_access.h b/runtime/native/scoped_fast_native_object_access.h
index 6a9365d517..a3b01d7701 100644
--- a/runtime/native/scoped_fast_native_object_access.h
+++ b/runtime/native/scoped_fast_native_object_access.h
@@ -19,9 +19,10 @@
 
 #include <jni.h>
 
+#include "base/macros.h"
 #include "scoped_thread_state_change.h"
 
-namespace art {
+namespace art HIDDEN {
 
 // Variant of ScopedObjectAccess that does no runnable transitions. Should only be used by "fast"
 // JNI methods.
diff --git a/runtime/native/string_array_utils.h b/runtime/native/string_array_utils.h
index 41d50933f9..f1fbe540f5 100644
--- a/runtime/native/string_array_utils.h
+++ b/runtime/native/string_array_utils.h
@@ -17,13 +17,14 @@
 #ifndef ART_RUNTIME_NATIVE_STRING_ARRAY_UTILS_H_
 #define ART_RUNTIME_NATIVE_STRING_ARRAY_UTILS_H_
 
+#include "base/macros.h"
 #include "base/locks.h"
 #include "class_root-inl.h"
 #include "handle_scope-inl.h"
 #include "mirror/object_array-alloc-inl.h"
 #include "mirror/string.h"
 
-namespace art {
+namespace art HIDDEN {
 
 namespace detail {
 
diff --git a/runtime/native/sun_misc_Unsafe.cc b/runtime/native/sun_misc_Unsafe.cc
index f1e47ee100..573b5a9db2 100644
--- a/runtime/native/sun_misc_Unsafe.cc
+++ b/runtime/native/sun_misc_Unsafe.cc
@@ -36,7 +36,7 @@
 #include "scoped_fast_native_object_access-inl.h"
 #include "well_known_classes-inl.h"
 
-namespace art {
+namespace art HIDDEN {
 
 static jboolean Unsafe_compareAndSwapInt(JNIEnv* env, jobject, jobject javaObj, jlong offset,
                                          jint expectedValue, jint newValue) {
diff --git a/runtime/native/sun_misc_Unsafe.h b/runtime/native/sun_misc_Unsafe.h
index 93194f4fad..fe120b5a9b 100644
--- a/runtime/native/sun_misc_Unsafe.h
+++ b/runtime/native/sun_misc_Unsafe.h
@@ -19,7 +19,9 @@
 
 #include <jni.h>
 
-namespace art {
+#include "base/macros.h"
+
+namespace art HIDDEN {
 
 void register_sun_misc_Unsafe(JNIEnv* env);