Add capabilities for jvmti.

Make a skeleton for jvmti capabilities.

Bug: 31455788
Test: m -j40 test-art-host

Change-Id: Ia1f96450d8a1ee59b9db66cf65492154d61fab48
diff --git a/runtime/openjdkjvmti/art_jvmti.h b/runtime/openjdkjvmti/art_jvmti.h
index a321124..48b29a3 100644
--- a/runtime/openjdkjvmti/art_jvmti.h
+++ b/runtime/openjdkjvmti/art_jvmti.h
@@ -52,11 +52,13 @@
 struct ArtJvmTiEnv : public jvmtiEnv {
   art::JavaVMExt* art_vm;
   void* local_data;
+  jvmtiCapabilities capabilities;
 
   EventMasks event_masks;
   std::unique_ptr<jvmtiEventCallbacks> event_callbacks;
 
-  explicit ArtJvmTiEnv(art::JavaVMExt* runtime) : art_vm(runtime), local_data(nullptr) {
+  explicit ArtJvmTiEnv(art::JavaVMExt* runtime)
+      : art_vm(runtime), local_data(nullptr), capabilities() {
     functions = &gJvmtiInterface;
   }
 
@@ -121,6 +123,50 @@
   return ret;
 }
 
+const jvmtiCapabilities kPotentialCapabilities = {
+    .can_tag_objects                                 = 1,
+    .can_generate_field_modification_events          = 0,
+    .can_generate_field_access_events                = 0,
+    .can_get_bytecodes                               = 0,
+    .can_get_synthetic_attribute                     = 0,
+    .can_get_owned_monitor_info                      = 0,
+    .can_get_current_contended_monitor               = 0,
+    .can_get_monitor_info                            = 0,
+    .can_pop_frame                                   = 0,
+    .can_redefine_classes                            = 0,
+    .can_signal_thread                               = 0,
+    .can_get_source_file_name                        = 0,
+    .can_get_line_numbers                            = 0,
+    .can_get_source_debug_extension                  = 0,
+    .can_access_local_variables                      = 0,
+    .can_maintain_original_method_order              = 0,
+    .can_generate_single_step_events                 = 0,
+    .can_generate_exception_events                   = 0,
+    .can_generate_frame_pop_events                   = 0,
+    .can_generate_breakpoint_events                  = 0,
+    .can_suspend                                     = 0,
+    .can_redefine_any_class                          = 0,
+    .can_get_current_thread_cpu_time                 = 0,
+    .can_get_thread_cpu_time                         = 0,
+    .can_generate_method_entry_events                = 0,
+    .can_generate_method_exit_events                 = 0,
+    .can_generate_all_class_hook_events              = 0,
+    .can_generate_compiled_method_load_events        = 0,
+    .can_generate_monitor_events                     = 0,
+    .can_generate_vm_object_alloc_events             = 0,
+    .can_generate_native_method_bind_events          = 0,
+    .can_generate_garbage_collection_events          = 0,
+    .can_generate_object_free_events                 = 0,
+    .can_force_early_return                          = 0,
+    .can_get_owned_monitor_stack_depth_info          = 0,
+    .can_get_constant_pool                           = 0,
+    .can_set_native_method_prefix                    = 0,
+    .can_retransform_classes                         = 0,
+    .can_retransform_any_class                       = 0,
+    .can_generate_resource_exhaustion_heap_events    = 0,
+    .can_generate_resource_exhaustion_threads_events = 0,
+};
+
 }  // namespace openjdkjvmti
 
 #endif  // ART_RUNTIME_OPENJDKJVMTI_ART_JVMTI_H_