Add context to gfx::Screen calls in support of simultaneous desktop+ash

chrome/browser/ui/panels/panel_mouse_watcher_timer.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 "base/time.h"
 #include "base/timer.h"
 #include "chrome/browser/ui/panels/panel_mouse_watcher.h"
 #include "ui/gfx/screen.h"
 
 // A timer based implementation of PanelMouseWatcher.  Currently used for Gtk
@@ skipping 47 matching lines @@
 void PanelMouseWatcherTimer::Stop() {
   DCHECK(IsActive());
   timer_.Stop();
 }
 
 bool PanelMouseWatcherTimer::IsActive() const {
   return timer_.IsRunning();
 }
 
 gfx::Point PanelMouseWatcherTimer::GetMousePosition() const {
-  return gfx::Screen::GetCursorScreenPoint();
+  // TODO(scottmg): NativeScreen is wrong. http://crbug.com/133312
+  return gfx::Screen::GetNativeScreen()->GetCursorScreenPoint();
 }
 
 void PanelMouseWatcherTimer::DoWork() {
   NotifyMouseMovement(GetMousePosition());
 }