Cleanup: Remove unneeded forward declarations in chrome/renderer.

chrome/renderer/blocked_plugin.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 CHROME_RENDERER_BLOCKED_PLUGIN_H_
 #define CHROME_RENDERER_BLOCKED_PLUGIN_H_
 #pragma once
 
 #include "content/public/renderer/render_view_observer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginParams.h"
 #include "webkit/glue/cpp_bound_class.h"
 #include "webkit/plugins/npapi/webview_plugin.h"
 #include "webkit/plugins/webplugininfo.h"
 
-class GURL;
-
-namespace webkit {
-namespace npapi {
-class PluginGroup;
-}
-}
-
-namespace webkit_glue {
-struct CustomContextMenuContext;
-}
-
 class BlockedPlugin : public content::RenderViewObserver,
                       public CppBoundClass,
                       public webkit::npapi::WebViewPlugin::Delegate {
  public:
   BlockedPlugin(content::RenderView* render_view,
                 WebKit::WebFrame* frame,
                 const webkit::WebPluginInfo& info,
                 const WebKit::WebPluginParams& params,
                 const WebPreferences& settings,
                 int template_id,
@@ skipping 45 matching lines @@
   // The name of the plugin that was blocked.
   string16 name_;
   // True iff the plugin was blocked because the page was being prerendered.
   // Plugin will automatically be loaded when the page is displayed.
   bool is_blocked_for_prerendering_;
   bool hidden_;
   bool allow_loading_;
 };
 
 #endif  // CHROME_RENDERER_BLOCKED_PLUGIN_H_