ServiceWorker: Make "ready" fetches registration from browser process(1/3).

public/platform/WebServiceWorkerProvider.h

Index: public/platform/WebServiceWorkerProvider.h
diff --git a/public/platform/WebServiceWorkerProvider.h b/public/platform/WebServiceWorkerProvider.h
index 3734599f1dfc725c956da259dd71e489e73a1952..ce600c50206a661cecf36bf815fc2b19843cea0a 100644
--- a/public/platform/WebServiceWorkerProvider.h
+++ b/public/platform/WebServiceWorkerProvider.h
@@ -55,6 +55,7 @@ public:
     typedef WebCallbacks<WebServiceWorkerRegistration, WebServiceWorkerError> WebServiceWorkerRegistrationCallbacks;
     typedef WebCallbacks<bool, WebServiceWorkerError> WebServiceWorkerUnregistrationCallbacks;
     typedef WebCallbacks<WebServiceWorkerRegistration, WebServiceWorkerError> WebServiceWorkerGetRegistrationCallbacks;
+    typedef WebCallbacks<WebServiceWorkerRegistration, void> WebServiceWorkerGetRegistrationForReadyCallbacks;
 
     virtual void registerServiceWorker(const WebURL& pattern, const WebURL& scriptUrl, WebServiceWorkerRegistrationCallbacks*) { }
 
@@ -62,6 +63,7 @@ public:
     virtual void unregisterServiceWorker(const WebURL& pattern, WebServiceWorkerUnregistrationCallbacks*) { }
 
     virtual void getRegistration(const WebURL& documentURL, WebServiceWorkerGetRegistrationCallbacks*) { }
+    virtual void getRegistrationForReady(WebServiceWorkerGetRegistrationForReadyCallbacks*) { }
 
     virtual ~WebServiceWorkerProvider() { }
 };