Implement empty WorkerInternals interface.

content/renderer/renderer_blink_platform_impl.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_
 #define CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 180 matching lines @@
                                  blink::WebStorageQuotaCallbacks) override;
   void vibrate(unsigned int milliseconds) override;
   void cancelVibration() override;
   blink::WebThread* currentThread() override;
   blink::BlameContext* topLevelBlameContext() override;
   void recordRappor(const char* metric,
                     const blink::WebString& sample) override;
   void recordRapporURL(const char* metric, const blink::WebURL& url) override;
 
   blink::WebTrialTokenValidator* trialTokenValidator() override;
+  void workerContextCreated(const v8::Local<v8::Context>& worker) override;
 
   // Set the PlatformEventObserverBase in |platform_event_observers_| associated
   // with |type| to |observer|. If there was already an observer associated to
   // the given |type|, it will be replaced.
   // Note that |observer| will be owned by this object after the call.
   void SetPlatformEventObserverForTesting(
       blink::WebPlatformEventType type,
       std::unique_ptr<PlatformEventObserverBase> observer);
 
   // Disables the WebSandboxSupport implementation for testing.
@@ skipping 94 matching lines @@
   std::unique_ptr<LocalStorageCachedAreas> local_storage_cached_areas_;
 
   std::unique_ptr<BlinkServiceRegistryImpl> blink_service_registry_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererBlinkPlatformImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_