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

webkit/plugins/npapi/webplugin_delegate.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_DELEGATE_H_
 #define WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_DELEGATE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/string16.h"
 #include "build/build_config.h"
 #include "third_party/npapi/bindings/npapi.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCanvas.h"
 #include "ui/gfx/native_widget_types.h"
 
-class FilePath;
 class GURL;
 struct NPObject;
 
 namespace WebKit {
 class WebInputEvent;
 struct WebCursorInfo;
 }
 
 namespace gfx {
 class Rect;
@@ skipping 99 matching lines @@
   // Creates a WebPluginResourceClient instance for an existing stream that is
   // has become seekable.
   virtual WebPluginResourceClient* CreateSeekableResourceClient(
       unsigned long resource_id, int range_request_id) = 0;
 };
 
 }  // namespace npapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_DELEGATE_H_