blink: Cleanup class/struct forward declarations

third_party/WebKit/public/web/WebDevToolsAgentClient.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 20 matching lines @@
 #ifndef WebDevToolsAgentClient_h
 #define WebDevToolsAgentClient_h
 
 #include "../platform/WebCommon.h"
 #include "../platform/WebString.h"
 
 namespace blink {
 
 class WebLocalFrame;
 class WebString;
-struct WebDeviceEmulationParams;
 
 class WebDevToolsAgentClient {
  public:
   // Sends response message over the protocol, update agent state on the browser
   // side for potential re-attach. |callId| for notifications is 0, |state| for
   // notifications is empty.
   virtual void sendProtocolMessage(int sessionId,
                                    int callId,
                                    const WebString& response,
                                    const WebString& state) {}
@@ skipping 25 matching lines @@
 
   virtual void setCPUThrottlingRate(double rate) {}
 
  protected:
   ~WebDevToolsAgentClient() {}
 };
 
 }  // namespace blink
 
 #endif