Don't move cursor location when rotation /ui scaling has changed

ash/display/display_controller.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 ASH_DISPLAY_DISPLAY_CONTROLLER_H_
 #define ASH_DISPLAY_DISPLAY_CONTROLLER_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 173 matching lines @@
 
   // Returns the display layout used for current displays.
   DisplayLayout GetCurrentDisplayLayout() const;
 
   // Returns the current display pair.
   DisplayIdPair GetCurrentDisplayIdPair() const;
 
   // Returns the display layout registered for the given display id |pair|.
   DisplayLayout GetRegisteredDisplayLayout(const DisplayIdPair& pair) const;
 
+  // Checks if the mouse pointer is on one of displays, and moves to
+  // the center of the nearest display if it's outside of all displays.
+  void EnsurePointerInDisplays();
+
+  gfx::Point GetNativeMouseCursorLocation() const;
+  void UpdateMouseCursor(const gfx::Point& point_in_native);
+
   // aura::DisplayObserver overrides:
   virtual void OnDisplayBoundsChanged(
       const gfx::Display& display) OVERRIDE;
   virtual void OnDisplayAdded(const gfx::Display& display) OVERRIDE;
   virtual void OnDisplayRemoved(const gfx::Display& display) OVERRIDE;
 
  private:
   friend class internal::DisplayManager;
 
   // Create a root window for given |display|.
@@ skipping 53 matching lines @@
   // Store the primary root window temporarily while replacing
   // display.
   aura::RootWindow* primary_root_window_for_replace_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_CONTROLLER_H_