Cleanup: Remove unneeded forward declarations in webkit/plugins/.

webkit/plugins/npapi/webplugin_impl.h

 // Copyright (c) 2011 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 WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_IMPL_H_
 #define WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_IMPL_H_
 
 #include <string>
 #include <map>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/memory/weak_ptr.h"
 #include "googleurl/src/gurl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPlugin.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebRect.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebString.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURLLoaderClient.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURLRequest.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebVector.h"
 #include "ui/gfx/native_widget_types.h"
 #include "webkit/plugins/npapi/webplugin.h"
 
-class WebViewDelegate;
-
 namespace WebKit {
 class WebFrame;
 class WebPluginContainer;
 class WebURLResponse;
 class WebURLLoader;
 class WebURLRequest;
 }
 
 namespace webkit_glue {
 class MultipartResponseDelegate;
@@ skipping 261 matching lines @@
 
   base::WeakPtrFactory<WebPluginImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebPluginImpl);
 };
 
 }  // namespace npapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_IMPL_H_