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

webkit/plugins/npapi/webplugin_ime_win.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_IME_WIN_H_
 #define WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_IME_WIN_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/string16.h"
 #include "third_party/npapi/bindings/npapi.h"
 #include "ui/gfx/rect.h"
 
-namespace WebKit {
-class WebInputEvent;
-class WebCompositionEvent;
-}
-
 namespace webkit {
 namespace npapi {
 
 class PluginInstance;
 
 // A class that emulates an IME for windowless plug-ins. A windowless plug-in
 // does not have a window. Therefore, we cannot attach an IME to a windowless
 // plug-in. To allow such windowless plug-ins to use IMEs without any changes to
 // them, this class receives the IME data from a browser and patches IMM32
 // functions to return the IME data when a windowless plug-in calls IMM32
@@ skipping 150 matching lines @@
   gfx::Rect caret_rect_;
 
   // The pointer to the WebPluginIMEWin instance used by patch functions.
   static WebPluginIMEWin* instance_;
 };
 
 }  // namespace npapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_IME_WIN_H_