Remove Chrome Frame code and resources.

chrome_frame/registry_watcher.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.
-//
-// A utility class that makes it easy to register for registry change
-// notifications.
-//
-
-#ifndef CHROME_FRAME_REGISTRY_WATCHER_H_
-#define CHROME_FRAME_REGISTRY_WATCHER_H_
-
-#include <windows.h>
-
-class RegistryWatcher {
- public:
-  typedef void (*NotifyFunc)();
-  RegistryWatcher(HKEY hive, const wchar_t* path, NotifyFunc callback);
-  ~RegistryWatcher();
-
-  bool StartWatching();
-  void StopWatching();
-
- private:
-  static void CALLBACK WaitCallback(void* param, BOOLEAN wait_fired);
-
-  HKEY registry_key_;
-
-  HANDLE wait_event_;
-  HANDLE wait_handle_;
-  bool stopping_;
-
-  NotifyFunc callback_;
-};
-
-
-#endif  // CHROME_FRAME_REGISTRY_WATCHER_H_