Rename RootWindowHost* to WindowTreeHost*

ui/base/ime/remote_input_method_win.h

 // Copyright 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 UI_BASE_IME_REMOTE_INPUT_METHOD_WIN_H_
 #define UI_BASE_IME_REMOTE_INPUT_METHOD_WIN_H_
 
 #include <Windows.h>
 
 #include <string>
@@ skipping 14 matching lines @@
 class InputMethod;
 struct CompositionText;
 
 // RemoteInputMethodWin is a special implementation of ui::InputMethod that
 // works as a proxy of an IME handler running in the metro_driver process.
 // RemoteInputMethodWin works as follows.
 // - Any action to RemoteInputMethodWin should be delegated to the
 //   metro_driver process via RemoteInputMethodDelegateWin.
 // - Data retrieval from RemoteInputMethodPrivateWin is implemented with
 //   data cache. Whenever the IME state in the metro_driver process is changed,
-//   RemoteRootWindowHostWin, which receives IPCs from metro_driver process,
+//   RemoteWindowTreeHostWin, which receives IPCs from metro_driver process,
 //   will call RemoteInputMethodPrivateWin::OnCandidatePopupChanged and/or
 //   RemoteInputMethodPrivateWin::OnInputSourceChanged accordingly so that
 //   the state cache should be updated.
 // - Some IPC messages that represent actions to TextInputClient should be
 //   delegated to RemoteInputMethodPrivateWin so that RemoteInputMethodWin can
 //   work as a real proxy.
 
 // Returns true if |widget| requires RemoteInputMethodWin.
 bool IsRemoteInputMethodWinRequired(gfx::AcceleratedWidget widget);
 
@@ skipping 45 matching lines @@
   // type of the focused text input client is TEXT_INPUT_TYPE_NONE.
   virtual void OnTextCommitted(const base::string16& text) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RemoteInputMethodPrivateWin);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_IME_REMOTE_INPUT_METHOD_WIN_H_