Remove Chrome Frame code and resources.

chrome_frame/bho_loader.h

-// Copyright (c) 2010 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_FRAME_BHO_LOADER_H_
-#define CHROME_FRAME_BHO_LOADER_H_
-
-#include <windows.h>
-
-// Forward.
-class EventHooker;
-
-// This class simulates BHO loading in an IE process. It watches for the
-// creation of a specific window and then retrieves the web browser object
-// for that window and simulates loading of the BHO.
-class BHOLoader {
- public:
-  BHOLoader();
-  ~BHOLoader();
-
-  // Callback invoked on receipt of an accessibility event.
-  void OnHookEvent(DWORD event, HWND window);
-
-  // Call this to install event hooks that will trigger on window creation
-  // and reparenting. Returns true if the hooks are successfully installed,
-  // false otherwise.
-  bool StartHook();
-
-  // Call this to remove the event hooks that are installed by StartHook().
-  void StopHook();
-
-  // Retrieve the BHOLoader instance. Note that this is NOT thread-safe.
-  static BHOLoader* GetInstance();
-
- private:
-  EventHooker* hooker_;
-};
-
-#endif  // CHROME_FRAME_BHO_LOADER_H_