Pass the v8::Context through the willDestroyServiceWorkerContextOnWorkerThread event.

content/public/renderer/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 CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_
 #define CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 290 matching lines @@
       std::map<std::string, std::string>* properties) {}
 
   // Notifies that a service worker context has been created. This function
   // is called from the worker thread.
   virtual void DidInitializeServiceWorkerContextOnWorkerThread(
       v8::Local<v8::Context> context,
       const GURL& url) {}
 
   // Notifies that a service worker context will be destroyed. This function
   // is called from the worker thread.
-  virtual void WillDestroyServiceWorkerContextOnWorkerThread(const GURL& url) {}
+  virtual void WillDestroyServiceWorkerContextOnWorkerThread(
+      v8::Local<v8::Context> context,
+      const GURL& url) {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_