Revert 157773 - This is followup from Charlie's comments on Fady's cl: http://chromiumcodereview.ap…

content/browser/browser_plugin/browser_plugin_embedder_helper.h

-// Copyright (c) 2012 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_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_HELPER_H_
-#define CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_HELPER_H_
-
-#include <string>
-
-#include "base/compiler_specific.h"
-#include "content/public/browser/render_view_host_observer.h"
-
-namespace IPC {
-class Message;
-class SyncMessage;
-}
-
-namespace gfx {
-class Size;
-}
-
-struct BrowserPluginHostMsg_ResizeGuest_Params;
-
-namespace content {
-
-class BrowserPluginEmbedder;
-class RenderViewHost;
-
-// Helper for browser plugin embedder.
-//
-// A lot of messages coming from guests need to know the guest's RenderViewHost.
-// BrowserPluginEmbedderHelper handles BrowserPluginHostMsg messages and
-// relays them with their associated RenderViewHosts to its delegate where they
-// will be handled.
-//
-// A BrowserPluginEmbedderHelper is created whenever a BrowserPluginEmbedder is
-// created. BrowserPluginEmbedder's lifetime is managed by the associated
-// RenderViewHost. Functions in this class is assumed to be run on UI thread.
-class BrowserPluginEmbedderHelper : public RenderViewHostObserver {
- public:
-  BrowserPluginEmbedderHelper(BrowserPluginEmbedder* embedder,
-                              RenderViewHost* render_view_host);
-  virtual ~BrowserPluginEmbedderHelper();
-
-  // Make it public for sync IPCs.
-  virtual bool Send(IPC::Message* message) OVERRIDE;
-
- protected:
-  // RenderViewHostObserver implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-
- private:
-  // Message handlers.
-  void OnNavigateGuest(int instance_id,
-                       int64 frame_id,
-                       const std::string& src,
-                       const gfx::Size& size);
-  void OnResizeGuest(int instance_id,
-                     const BrowserPluginHostMsg_ResizeGuest_Params& params);
-  void OnUpdateRectACK(int instance_id, int message_id, const gfx::Size& size);
-  void OnHandleInputEvent(const IPC::SyncMessage& message, bool* handled);
-  void OnSetFocus(int instance_id, bool focused);
-  void OnPluginDestroyed(int instance_id);
-
-  BrowserPluginEmbedder* embedder_;
-
-  DISALLOW_COPY_AND_ASSIGN(BrowserPluginEmbedderHelper);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_HELPER_H_