ServiceWorker: Let the proxy drive state change

content/child/service_worker/web_service_worker_impl.h

Index: content/child/service_worker/web_service_worker_impl.h
diff --git a/content/child/service_worker/web_service_worker_impl.h b/content/child/service_worker/web_service_worker_impl.h
index f6e00a1bcbc8685c093972fc43f2dc033ca69ee8..64a135ec60ba6cf8edc9a2924af65de720410ef8 100644
--- a/content/child/service_worker/web_service_worker_impl.h
+++ b/content/child/service_worker/web_service_worker_impl.h
@@ -28,15 +28,18 @@ class WebServiceWorkerImpl
                        ThreadSafeSender* thread_safe_sender);
   virtual ~WebServiceWorkerImpl();
 
-  void SetState(blink::WebServiceWorkerState new_state);
-
   virtual void setProxy(blink::WebServiceWorkerProxy* proxy);
+  virtual void setState(blink::WebServiceWorkerState new_state);
   virtual blink::WebURL scope() const;
   virtual blink::WebURL url() const;
   virtual blink::WebServiceWorkerState state() const;
   virtual void postMessage(const blink::WebString& message,
                            blink::WebMessagePortChannelArray* channels);
 
+  // Informs the proxy that the state changed on the browser side. The proxy may
+  // queue the change and call setState() to commit it when ready.
+  void OnStateChanged(blink::WebServiceWorkerState new_state);
+
  private:
   const int handle_id_;
   const GURL scope_;