Notify CPU profiler when calling native getters

src/api.h

Index: src/api.h
diff --git a/src/api.h b/src/api.h
index 3c141f7097cf2476b51e1108d99210d736ee37e7..3cff3cd0ece9bbc3152756adf1f80f535e90fc57 100644
--- a/src/api.h
+++ b/src/api.h
@@ -662,6 +662,24 @@ void HandleScopeImplementer::DeleteExtensions(internal::Object** prev_limit) {
 }
 
 
+// Interceptor functions called from generated inline caches to notify
+// CPU profiler that external callbacks are invoked.
+v8::Handle<v8::Value> InvokeAccessorGetter(
+    v8::Local<v8::String> property,
+    const v8::AccessorInfo& info,
+    v8::AccessorGetter getter);
+
+
+void InvokeAccessorGetterCallback(
+    v8::Local<v8::String> property,
+    const v8::PropertyCallbackInfo<v8::Value>& info,
+    v8::AccessorGetterCallback getter);
+
+v8::Handle<v8::Value> InvokeInvocationCallback(const v8::Arguments& args,
+                                              v8::InvocationCallback callback);
+void InvokeFunctionCallback(const v8::FunctionCallbackInfo<v8::Value>& info,
+                            v8::FunctionCallback callback);
+
 class Testing {
  public:
   static v8::Testing::StressType stress_type() { return stress_type_; }