Revert 236048 "Rename RootWindowHost* to WindowTreeHost*"

trunk/src/chrome/browser/ui/views/frame/browser_frame_ashwin.cc

 // 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.
 
 #include "chrome/browser/ui/views/frame/browser_frame_ashwin.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "chrome/browser/metro_utils/metro_chrome_win.h"
 #include "ui/aura/remote_root_window_host_win.h"
 
 BrowserFrameAshWin::BrowserFrameAshWin(BrowserFrame* browser_frame,
                                        BrowserView* browser_view)
     : BrowserFrameAsh(browser_frame, browser_view) {
 }
 
 BrowserFrameAshWin::~BrowserFrameAshWin() {
 }
 
 void BrowserFrameAshWin::OnWindowFocused(aura::Window* gained_focus,
                                          aura::Window* lost_focus) {
   BrowserFrameAsh::OnWindowFocused(gained_focus, lost_focus);
   if (GetNativeWindow() != gained_focus)
     return;
 
   // If the activated window is in Metro mode, and the viewer process window is
   // not in the foreground, activate Metro Chrome.
-  if (!aura::RemoteWindowTreeHostWin::Instance()->IsForegroundWindow()) {
+  if (!aura::RemoteRootWindowHostWin::Instance()->IsForegroundWindow()) {
     // PostTask because ActivateMetroChrome can not be called nested in another
     // ::SendMessage().
     base::MessageLoop::current()->PostTask(
         FROM_HERE,
         base::Bind(base::IgnoreResult(chrome::ActivateMetroChrome)));
   }
 }