Refactor calls to CALL_HEAP_FUNCTION.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 694a51f69c9915ceae543b6af3fa5b6e82cc1a51..469dbff9b91210ce85d86f58b2cf087349f10daf 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -3583,7 +3583,7 @@ Local<v8::Object> v8::Object::Clone() {
   ENTER_V8(isolate);
   i::Handle<i::JSObject> self = Utils::OpenHandle(this);
   EXCEPTION_PREAMBLE(isolate);
-  i::Handle<i::JSObject> result = i::JSObject::Copy(self);
+  i::Handle<i::JSObject> result = isolate->factory()->CopyJSObject(self);
   has_pending_exception = result.is_null();
   EXCEPTION_BAILOUT_CHECK(isolate, Local<Object>());
   return Utils::ToLocal(result);
@@ -5797,7 +5797,8 @@ Local<Object> Array::CloneElementAt(uint32_t index) {
   i::Handle<i::JSObject> paragon_handle(i::JSObject::cast(paragon));
   EXCEPTION_PREAMBLE(isolate);
   ENTER_V8(isolate);
-  i::Handle<i::JSObject> result = i::JSObject::Copy(paragon_handle);
+  i::Handle<i::JSObject> result =
+      isolate->factory()->CopyJSObject(paragon_handle);
   has_pending_exception = result.is_null();
   EXCEPTION_BAILOUT_CHECK(isolate, Local<Object>());
   return Utils::ToLocal(result);