Rename RootWindowHost* to WindowTreeHost*

chrome/browser/plugins/plugin_infobar_delegates.cc

 // 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.
 
 #include "chrome/browser/plugins/plugin_infobar_delegates.h"
 
 #include "base/bind.h"
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
@@ skipping 479 matching lines @@
 void LaunchDesktopInstanceHelper(const base::string16& url) {
   base::FilePath exe_path;
   if (!PathService::Get(base::FILE_EXE, &exe_path))
     return;
   base::FilePath shortcut_path(
       ShellIntegration::GetStartMenuShortcut(exe_path));
 
   // Actually launching the process needs to happen in the metro viewer,
   // otherwise it won't automatically transition to desktop.  So we have
   // to send an IPC to the viewer to do the ShellExecute.
-  aura::RemoteRootWindowHostWin::Instance()->HandleOpenURLOnDesktop(
+  aura::RemoteWindowTreeHostWin::Instance()->HandleOpenURLOnDesktop(
       shortcut_path, url);
 }
 #endif
 
 bool PluginMetroModeInfoBarDelegate::Accept() {
   chrome::AttemptRestartToDesktopMode();
   return true;
 }
 
 base::string16 PluginMetroModeInfoBarDelegate::GetLinkText() const {
@@ skipping 11 matching lines @@
           "https://support.google.com/chrome/?p=ib_redirect_to_desktop"),
       content::Referrer(),
       (disposition == CURRENT_TAB) ? NEW_FOREGROUND_TAB : disposition,
       content::PAGE_TRANSITION_LINK, false));
   return false;
 }
 
 #endif  // defined(OS_WIN)
 
 #endif  // defined(ENABLE_PLUGIN_INSTALLATION)