Rename gfx::Monitor to gfx::Display

ui/gfx/screen_impl.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_GFX_SCREEN_IMPL_H_
 #define UI_GFX_SCREEN_IMPL_H_
 #pragma once
 
+#include "ui/gfx/display.h"
 #include "ui/gfx/native_widget_types.h"
-#include "ui/gfx/monitor.h"
 #include "ui/gfx/point.h"
 
 namespace gfx {
 
 // A class that provides |gfx::Screen|'s implementation on aura.
 class UI_EXPORT ScreenImpl {
  public:
   virtual ~ScreenImpl() {}
 
   virtual gfx::Point GetCursorScreenPoint() = 0;
   virtual gfx::NativeWindow GetWindowAtCursorScreenPoint() = 0;
 
   virtual int GetNumMonitors() = 0;
-  virtual gfx::Monitor GetMonitorNearestWindow(
+  virtual gfx::Display GetMonitorNearestWindow(
       gfx::NativeView window) const = 0;
-  virtual gfx::Monitor GetMonitorNearestPoint(
+  virtual gfx::Display GetMonitorNearestPoint(
       const gfx::Point& point) const = 0;
-  virtual gfx::Monitor GetPrimaryMonitor() const = 0;
+  virtual gfx::Display GetPrimaryMonitor() const = 0;
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_SCREEN_IMPL_H_