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

ash/display/display_manager.h

Index: ash/display/display_manager.h
diff --git a/ash/display/display_manager.h b/ash/display/display_manager.h
index a8bd2c7d6fcfa8cae560a0ec4a19a6dd10d5e8b0..b63aec46cd20f7888067cecfcb377bacfb810868 100644
--- a/ash/display/display_manager.h
+++ b/ash/display/display_manager.h
@@ -193,10 +193,6 @@ class ASH_EXPORT DisplayManager : public aura::RootWindowObserver {
   // Refer to |CreateDisplayFromSpec| API for the format of |spec|.
   void AddDisplayFromSpec(const std::string& spec);
 
-  // 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();
-
   // Inserts and update the DisplayInfo according to the overscan
   // state. Note that The DisplayInfo stored in the |internal_display_info_|
   // can be different from |new_info| (due to overscan state), so