Pass the v8::Context through the willDestroyServiceWorkerContextOnWorkerThread event.

public/web/modules/serviceworker/WebServiceWorkerContextClient.h

Index: public/web/modules/serviceworker/WebServiceWorkerContextClient.h
diff --git a/public/web/modules/serviceworker/WebServiceWorkerContextClient.h b/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
index 10a586a2fb0f869cd61bc14a8a100eff2e82fd35..8421a65a98b1a9af5e016dc60c459e536ab9da16 100644
--- a/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
+++ b/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
@@ -79,7 +79,12 @@ public:
 
     // WorkerGlobalScope is about to be destroyed. The client should clear
     // the WebServiceWorkerGlobalScopeProxy when this is called.
-    virtual void willDestroyWorkerContext() { }
+    virtual void willDestroyWorkerContext(v8::Local<v8::Context> context)
+    {
+        willDestroyWorkerContext();
+    }
+    // TODO(kalman): Remove after Chromium-side patch lands.
+    virtual void willDestroyWorkerContext() {}
 
     // WorkerGlobalScope is destroyed and the worker is ready to be terminated.
     virtual void workerContextDestroyed() { }