Implement support for link type serviceworker in link elements.

third_party/WebKit/Source/core/loader/FrameLoaderClient.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2012 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 40 matching lines @@
 class DocumentLoader;
 class FetchRequest;
 class HTMLFormElement;
 class HTMLFrameElementBase;
 class HTMLFrameOwnerElement;
 class HTMLMediaElement;
 class HTMLPlugInElement;
 class HistoryItem;
 class KURL;
 class LocalFrame;
+class LinkLoaderClient;
 class ResourceError;
 class ResourceRequest;
 class ResourceResponse;
 class SecurityOrigin;
 class SharedWorkerRepositoryClient;
 class SubstituteData;
 class WebApplicationCacheHost;
 class WebApplicationCacheHostClient;
 class WebCookieJar;
 class WebMediaPlayerClient;
@@ skipping 175 matching lines @@
 
     // Called when elements preventing the sudden termination of the frame
     // become present or stop being present. |type| is the type of element
     // (BeforeUnload handler, Unload handler).
     enum SuddenTerminationDisablerType {
         BeforeUnloadHandler,
         UnloadHandler,
     };
     virtual void suddenTerminationDisablerChanged(bool present, SuddenTerminationDisablerType) { }
 
+    virtual void registerServiceWorker(const KURL& scriptUrl, const String& scope, LinkLoaderClient*) { }
 };
 
 } // namespace blink
 
 #endif // FrameLoaderClient_h