Inform the client when the Service Worker rejects an install event

public/web/WebServiceWorkerContextClient.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebServiceWorkerContextClient_h
 #define WebServiceWorkerContextClient_h
 
 #include "WebWorkerPermissionClientProxy.h"
+#include "public/platform/WebServiceWorkerEventResult.h"
 
 namespace blink {
 
 class WebDataSource;
 class WebString;
 class WebServiceWorkerContextProxy;
 class WebServiceWorkerNetworkProvider;
 class WebServiceWorkerResponse;
 
 // This interface is implemented by the client. It is supposed to be created
@@ skipping 29 matching lines @@
     virtual void reportException(const WebString& errorMessage, int lineNumber, int columnNumber, const WebString& sourceURL) { }
 
     // Inspector related messages.
     virtual void dispatchDevToolsMessage(const WebString&) { }
     virtual void saveDevToolsAgentState(const WebString&) { }
 
     // ServiceWorker specific method. Called after InstallEvent (dispatched
     // via WebServiceWorkerContextProxy) is handled by the ServiceWorker's
     // script context.
     virtual void didHandleInstallEvent(int installEventID) { }
+    virtual void didHandleInstallEvent(int installEventID, blink::WebServiceWorkerEventResult result)
+    {
+        didHandleInstallEvent(installEventID);
+    }
 
     // ServiceWorker specific methods. Called after FetchEvent is handled by the
     // ServiceWorker's script context. When no response is provided, the browser
     // should fallback to native fetch.
     virtual void didHandleFetchEvent(int fetchEventID) { }
     virtual void didHandleFetchEvent(int fetchEventID, const WebServiceWorkerResponse& response) { }
 
     // Ownership of the returned object is transferred to the caller.
     virtual WebServiceWorkerNetworkProvider* createServiceWorkerNetworkProvider(blink::WebDataSource*) { return 0; }
 };
 
 } // namespace blink
 
 #endif // WebWorkerContextClient_h