Add support for using AMD modules from extensions modules.

extensions/renderer/v8_schema_registry.cc

 // Copyright 2014 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 "extensions/renderer/v8_schema_registry.h"
 
 #include "base/logging.h"
 #include "base/values.h"
 #include "content/public/renderer/v8_value_converter.h"
 #include "extensions/common/extension_api.h"
@@ skipping 87 matching lines @@
   v8::Local<v8::Object> v8_schema(v8::Handle<v8::Object>::Cast(value));
   schema_cache_->Set(api, v8_schema);
 
   return handle_scope.Escape(v8_schema);
 }
 
 v8::Handle<v8::Context> V8SchemaRegistry::GetOrCreateContext(
     v8::Isolate* isolate) {
   // It's ok to create local handles in this function, since this is only called
   // when we have a HandleScope.
-  if (context_.IsEmpty()) {
-    v8::Handle<v8::Context> context = v8::Context::New(isolate);
-    context_.reset(context);
+  if (!context_holder_) {
+    context_holder_.reset(new gin::ContextHolder(isolate));
+    context_holder_->SetContext(v8::Context::New(isolate));
     schema_cache_.reset(new SchemaCache(isolate));
-    return context;
+    return context_holder_->context();
   }
-  return context_.NewHandle(isolate);
+  return context_holder_->context();
 }
 
 }  // namespace extensions