Add AccessibleObject and Field to mirror

Main motivation is to remove all the functionality / field access on
java side to ArtField. Also comes with some reflection speedups /
slowdowns.

Summary results:
getDeclaredField/getField are slower mostly due to JNI overhead.
However, there is a large speedup in getInt, setInt,
GetInstanceField, and GetStaticField.

Before timings (N5 --compiler-filter=everything):

                       benchmark      ns linear runtime
          Class_getDeclaredField  782.86 ===
                  Class_getField  832.77 ===
                    Field_getInt  160.17 =
                    Field_setInt  195.88 =
                GetInstanceField 3214.38 ==============
                  GetStaticField 6809.49 ==============================

After:
          Class_getDeclaredField 1068.15 ============
                  Class_getField 1180.00 ==============
                    Field_getInt  121.85 =
                    Field_setInt  139.98 =
                GetInstanceField 1986.15 =======================
                  GetStaticField 2523.63 ==============================

Bug: 19264997

Change-Id: Ic0d0fc1b56b95cd6d60f8e76f19caeaa23045c77
diff --git a/runtime/reflection.h b/runtime/reflection.h
index 857d63b..6bef664 100644
--- a/runtime/reflection.h
+++ b/runtime/reflection.h
@@ -69,13 +69,16 @@
                      jobject args, bool accessible)
     SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
-bool VerifyObjectIsClass(mirror::Object* o, mirror::Class* c)
+ALWAYS_INLINE bool VerifyObjectIsClass(mirror::Object* o, mirror::Class* c)
     SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
 bool VerifyAccess(Thread* self, mirror::Object* obj, mirror::Class* declaring_class,
                   uint32_t access_flags, mirror::Class** calling_class)
     SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
+void InvalidReceiverError(mirror::Object* o, mirror::Class* c)
+    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
 }  // namespace art
 
 #endif  // ART_RUNTIME_REFLECTION_H_