Revert 236048 "Rename RootWindowHost* to WindowTreeHost*"

trunk/src/ui/views/widget/desktop_aura/x11_desktop_handler.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 "ui/views/widget/desktop_aura/x11_desktop_handler.h"
 
 #include <X11/Xatom.h>
 #include <X11/Xlib.h>
 
 #include "base/message_loop/message_loop.h"
@@ skipping 133 matching lines @@
 }
 
 void X11DesktopHandler::OnWillDestroyEnv() {
   g_handler = NULL;
   delete this;
 }
 
 void X11DesktopHandler::OnActiveWindowChanged(::Window xid) {
   if (current_window_ == xid)
     return;
-  DesktopWindowTreeHostX11* old_host =
-      views::DesktopWindowTreeHostX11::GetHostForXID(current_window_);
+  DesktopRootWindowHostX11* old_host =
+      views::DesktopRootWindowHostX11::GetHostForXID(current_window_);
   if (old_host)
     old_host->HandleNativeWidgetActivationChanged(false);
 
-  DesktopWindowTreeHostX11* new_host =
-      views::DesktopWindowTreeHostX11::GetHostForXID(xid);
+  DesktopRootWindowHostX11* new_host =
+      views::DesktopRootWindowHostX11::GetHostForXID(xid);
   if (new_host)
     new_host->HandleNativeWidgetActivationChanged(true);
 
   current_window_ = xid;
 }
 
 }  // namespace views