blink: Cleanup class/struct forward declarations

third_party/WebKit/public/web/WebDevToolsFrontend.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 19 matching lines @@
 
 #ifndef WebDevToolsFrontend_h
 #define WebDevToolsFrontend_h
 
 #include "../platform/WebCommon.h"
 
 namespace blink {
 
 class WebDevToolsFrontendClient;
 class WebLocalFrame;
-class WebString;
-class WebView;
 
 // WebDevToolsFrontend represents DevTools client sitting in the Glue. It
 // provides direct and delegate Apis to the host.
 class WebDevToolsFrontend {
  public:
   BLINK_EXPORT static WebDevToolsFrontend* create(WebLocalFrame*,
                                                   WebDevToolsFrontendClient*);
 
   virtual ~WebDevToolsFrontend() {}
 };
 
 }  // namespace blink
 
 #endif