ui: Use base::MessageLoop.

ui/views/widget/desktop_aura/desktop_root_window_host_x11.h

 // 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.
 
 #ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_ROOT_WINDOW_HOST_X11_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_ROOT_WINDOW_HOST_X11_H_
 
 #include <X11/Xlib.h>
 
 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
@@ skipping 22 matching lines @@
 class DesktopCaptureClient;
 class DesktopDragDropClientAuraX11;
 class DesktopDispatcherClient;
 class X11DesktopWindowMoveClient;
 class X11WindowEventFilter;
 
 namespace corewm {
 class CursorManager;
 }
 
-class VIEWS_EXPORT DesktopRootWindowHostX11
-    : public DesktopRootWindowHost,
-      public aura::RootWindowHost,
-      public ui::DesktopSelectionProviderAuraX11,
-      public MessageLoop::Dispatcher {
+class VIEWS_EXPORT DesktopRootWindowHostX11 :
+    public DesktopRootWindowHost,
+    public aura::RootWindowHost,
+    public ui::DesktopSelectionProviderAuraX11,
+    public base::MessageLoop::Dispatcher {
  public:
   DesktopRootWindowHostX11(
       internal::NativeWidgetDelegate* native_widget_delegate,
       DesktopNativeWidgetAura* desktop_native_widget_aura,
       const gfx::Rect& initial_bounds);
   virtual ~DesktopRootWindowHostX11();
 
   // A way of converting an X11 |xid| host window into a |content_window_|.
   static aura::Window* GetContentWindowForXID(XID xid);
 
@@ skipping 184 matching lines @@
   // can notify widgets when they have lost capture, which controls a bunch of
   // things in views like hiding menus.
   static DesktopRootWindowHostX11* g_current_capture;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopRootWindowHostX11);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_ROOT_WINDOW_HOST_X11_H_