Move ServiceWorker public headers to public/{web,platform}/modules/serviceworker (1/3)

public/platform/modules/serviceworker/WebServiceWorkerProxy.h

 // 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.
 
 #ifndef WebServiceWorkerProxy_h
 #define WebServiceWorkerProxy_h
 
 #include "public/platform/WebCommon.h"
 
 namespace blink {
 
 // A proxy interface, passed via WebServiceWorker.setProxy() from blink to
 // the embedder, to talk to the ServiceWorker object from embedder.
 class BLINK_PLATFORM_EXPORT WebServiceWorkerProxy {
 public:
     // Notifies the proxy that the service worker state changed. The new state
     // should be accessible via WebServiceWorker.state().
     virtual void dispatchStateChangeEvent() = 0;
 
 protected:
     virtual ~WebServiceWorkerProxy() { }
 };
 
 } // namespace blink
 
 #endif // WebServiceWorkerProxy_h