ServiceWorker: Enable UseCounter for ServiceWorkerGlobalScope

third_party/WebKit/public/web/modules/serviceworker/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 82 matching lines @@
   // This is called on the main thread.
   virtual void workerContextFailedToStart() {}
 
   // Called when the worker script is evaluated. |success| is true if the
   // evaluation completed with no uncaught exception.
   virtual void didEvaluateWorkerScript(bool success) {}
 
   // Called when the worker context is initialized.
   virtual void didInitializeWorkerContext(v8::Local<v8::Context> context) {}
 
+  // Called when some API to be recorded in UseCounter is called on the worker
+  // global scope.
+  virtual void countFeature(uint32_t feature) {}
+
   // Called when the WorkerGlobalScope had an error or an exception.
   virtual void reportException(const WebString& errorMessage,
                                int lineNumber,
                                int columnNumber,
                                const WebString& sourceURL) {}
 
   // Called when the console message is reported.
   virtual void reportConsoleMessage(int source,
                                     int level,
                                     const WebString& message,
@@ skipping 158 matching lines @@
   // Called when the worker wants to register subscopes to handle via foreign
   // fetch. Will only be called while an install event is in progress.
   virtual void registerForeignFetchScopes(
       const WebVector<WebURL>& subScopes,
       const WebVector<WebSecurityOrigin>& origins) = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebServiceWorkerContextClient_h