gin: Use V8 Maybe APIs

gin/wrappable.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gin/wrappable.h"
 
 #include "base/logging.h"
 #include "gin/object_template_builder.h"
 #include "gin/per_isolate_data.h"
 
@@ skipping 31 matching lines @@
   }
 
   PerIsolateData* data = PerIsolateData::From(isolate);
   v8::Local<v8::ObjectTemplate> templ = data->GetObjectTemplate(info);
   if (templ.IsEmpty()) {
     templ = GetObjectTemplateBuilder(isolate).Build();
     CHECK(!templ.IsEmpty());
     data->SetObjectTemplate(info, templ);
   }
   CHECK_EQ(kNumberOfInternalFields, templ->InternalFieldCount());
-  v8::Local<v8::Object> wrapper = templ->NewInstance();
+  v8::Local<v8::Object> wrapper;
   // |wrapper| may be empty in some extreme cases, e.g., when
   // Object.prototype.constructor is overwritten.
-  if (wrapper.IsEmpty()) {
+  if (!templ->NewInstance(isolate->GetCurrentContext()).ToLocal(&wrapper)) {
     // The current wrappable object will be no longer managed by V8. Delete this
     // now.
     delete this;
     return wrapper;
   }
   wrapper->SetAlignedPointerInInternalField(kWrapperInfoIndex, info);
   wrapper->SetAlignedPointerInInternalField(kEncodedValueIndex, this);
   wrapper_.Reset(isolate, wrapper);
   wrapper_.SetWeak(this, FirstWeakCallback, v8::WeakCallbackType::kParameter);
   return wrapper;
@@ skipping 18 matching lines @@
   // instance of the C++ class associated with wrapper_info.
   if (info != wrapper_info)
     return NULL;
 
   return obj->GetAlignedPointerFromInternalField(kEncodedValueIndex);
 }
 
 }  // namespace internal
 
 }  // namespace gin