Pass the v8::Context through the willDestroyServiceWorkerContextOnWorkerThread event.

extensions/renderer/dispatcher.cc

 // Copyright 2014 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 "extensions/renderer/dispatcher.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/containers/scoped_ptr_map.h"
@@ skipping 420 matching lines @@
   // TODO(kalman): Make |request_sender| use |context->AddInvalidationObserver|.
   // In fact |request_sender_| should really be owned by ScriptContext.
   request_sender_->InvalidateSource(context);
 
   script_context_set_->Remove(context);
   VLOG(1) << "Num tracked contexts: " << script_context_set_->size();
 }
 
 // static
 void Dispatcher::WillDestroyServiceWorkerContextOnWorkerThread(
+    v8::Local<v8::Context> v8_context,
     const GURL& url) {
   if (RendererExtensionRegistry::Get()->GetExtensionOrAppByURL(url))
     g_service_worker_script_context_set.Get().Remove(url);
 }
 
 void Dispatcher::DidCreateDocumentElement(blink::WebLocalFrame* frame) {
   // Note: use GetEffectiveDocumentURL not just frame->document()->url()
   // so that this also injects the stylesheet on about:blank frames that
   // are hosted in the extension process.
   GURL effective_document_url = ScriptContext::GetEffectiveDocumentURL(
@@ skipping 1118 matching lines @@
 void Dispatcher::AddChannelSpecificFeatures() {
   // chrome-extension: resources should be allowed to register a Service Worker.
   if (FeatureProvider::GetBehaviorFeature(BehaviorFeature::kServiceWorker)
           ->IsAvailableToEnvironment()
           .is_available())
     WebSecurityPolicy::registerURLSchemeAsAllowingServiceWorkers(
         WebString::fromUTF8(kExtensionScheme));
 }
 
 }  // namespace extensions