Implement empty WorkerInternals interface.

content/renderer/renderer_blink_platform_impl.cc

 // 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.
 
 #include "content/renderer/renderer_blink_platform_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 1296 matching lines @@
           QuotaDispatcher::CreateWebStorageQuotaCallbacksWrapper(callbacks));
 }
 
 //------------------------------------------------------------------------------
 
 blink::WebTrialTokenValidator*
 RendererBlinkPlatformImpl::trialTokenValidator() {
   return &trial_token_validator_;
 }
 
+void RendererBlinkPlatformImpl::workerContextCreated(
+    const v8::Local<v8::Context>& worker) {
+  GetContentClient()->renderer()->DidInitializeWorkerContextOnWorkerThread(
+      worker);
+}
+
 }  // namespace content