Pass the v8::Context through the willDestroyServiceWorkerContextOnWorkerThread event.

chrome/renderer/chrome_content_renderer_client.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 CHROME_RENDERER_CHROME_CONTENT_RENDERER_CLIENT_H_
 #define CHROME_RENDERER_CHROME_CONTENT_RENDERER_CLIENT_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 140 matching lines @@
                     const std::string& sample) override;
   void RecordRapporURL(const std::string& metric, const GURL& url) override;
   scoped_ptr<blink::WebAppBannerClient> CreateAppBannerClient(
       content::RenderFrame* render_frame) override;
   void AddImageContextMenuProperties(
       const blink::WebURLResponse& response,
       std::map<std::string, std::string>* properties) override;
   void DidInitializeServiceWorkerContextOnWorkerThread(
       v8::Local<v8::Context> context,
       const GURL& url) override;
-  void WillDestroyServiceWorkerContextOnWorkerThread(const GURL& url) override;
+  void WillDestroyServiceWorkerContextOnWorkerThread(
+      v8::Local<v8::Context> context,
+      const GURL& url) override;
 #if defined(ENABLE_EXTENSIONS)
   // Takes ownership.
   void SetExtensionDispatcherForTest(
       extensions::Dispatcher* extension_dispatcher);
   extensions::Dispatcher* GetExtensionDispatcherForTest();
 #endif
 
 #if defined(ENABLE_SPELLCHECK)
   // Sets a new |spellcheck|. Used for testing only.
   // Takes ownership of |spellcheck|.
@@ skipping 77 matching lines @@
 #if defined(ENABLE_PRINT_PREVIEW)
   scoped_ptr<ChromePDFPrintClient> pdf_print_client_;
 #endif
 #if defined(ENABLE_PLUGINS)
   std::set<std::string> allowed_camera_device_origins_;
   std::set<std::string> allowed_compositor_origins_;
 #endif
 };
 
 #endif  // CHROME_RENDERER_CHROME_CONTENT_RENDERER_CLIENT_H_