A64: Synchronize with r18147.

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4036 matching lines @@
   }
 }
 
 
 bool v8::Object::IsCallable() {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ON_BAILOUT(isolate, "v8::Object::IsCallable()", return false);
   ENTER_V8(isolate);
   i::HandleScope scope(isolate);
   i::Handle<i::JSObject> obj = Utils::OpenHandle(this);
-  if (obj->IsJSFunction()) return true;
-  return i::Execution::GetFunctionDelegate(isolate, obj)->IsJSFunction();
+  return obj->IsCallable();
 }
 
 
 Local<v8::Value> Object::CallAsFunction(v8::Handle<v8::Value> recv,
                                         int argc,
                                         v8::Handle<v8::Value> argv[]) {
   i::Isolate* isolate = Utils::OpenHandle(this)->GetIsolate();
   ON_BAILOUT(isolate, "v8::Object::CallAsFunction()",
              return Local<v8::Value>());
   LOG_API(isolate, "Object::CallAsFunction");
@@ skipping 3712 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal