blink: Cleanup class/struct forward declarations

third_party/WebKit/public/web/WebFrameSerializerClient.h

 /*
  * Copyright (C) 2009 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 16 matching lines @@
  * (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 WebFrameSerializerClient_h
 #define WebFrameSerializerClient_h
 
 namespace blink {
 
 class WebCString;
-class WebURL;
 
 // This class is used for providing sink interface that can be used to receive
 // the individual chunks of data to be saved.
 class WebFrameSerializerClient {
  public:
   // This sink interface can receive the individual chunks of serialized data
   // to be saved, so we use values of following enum definition to indicate
   // the serialization status of serializing all html content. If frame is not
   // completely serialized yet, we will call didSerializeDataForFrame with URL
   // of current frame, data, data length and flag CurrentFrameIsNotFinished.
@@ skipping 14 matching lines @@
 
   WebFrameSerializerClient() {}
 
  protected:
   virtual ~WebFrameSerializerClient() {}
 };
 
 }  // namespace blink
 
 #endif