content: Cleanup class/struct forward declarations

content/public/renderer/pepper_plugin_instance.h

 // Copyright (c) 2013 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 CONTENT_PUBLIC_RENDERER_PEPPER_PLUGIN_INSTANCE_H_
 #define CONTENT_PUBLIC_RENDERER_PEPPER_PLUGIN_INSTANCE_H_
 
 #include <stdint.h>
 
 #include "base/process/process_handle.h"
@@ skipping 29 matching lines @@
 namespace blink {
 class WebPluginContainer;
 }
 
 namespace v8 {
 class Isolate;
 }
 
 namespace content {
 class RenderFrame;
-class RenderView;
 
 class PepperPluginInstance {
  public:
   // Return the PepperPluginInstance for the given |instance_id|. Will return
   // null if the instance is in the process of being deleted.
   static CONTENT_EXPORT PepperPluginInstance* Get(PP_Instance instance_id);
 
   virtual ~PepperPluginInstance() {}
 
   virtual content::RenderFrame* GetRenderFrame() = 0;
@@ skipping 59 matching lines @@
   // Sets the text input type for this plugin.
   virtual void SetTextInputType(ui::TextInputType type) = 0;
 
   // Posts a message to the JavaScript object for this instance.
   virtual void PostMessageToJavaScript(PP_Var message) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_PEPPER_PLUGIN_INSTANCE_H_