gfx::Screen: Replace GetWindowUnderCursor() with IsWindowUnderCursor().

ash/display/screen_ash.h

 // Copyright 2014 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_SCREEN_ASH_H_
 #define ASH_DISPLAY_SCREEN_ASH_H_
 
 #include <stdint.h>
 
 #include "ash/ash_export.h"
@@ skipping 14 matching lines @@
 
 // Aura implementation of display::Screen. Implemented here to avoid circular
 // dependencies.
 class ASH_EXPORT ScreenAsh : public display::Screen {
  public:
   ScreenAsh();
   ~ScreenAsh() override;
 
   // display::Screen overrides:
   gfx::Point GetCursorScreenPoint() override;
-  gfx::NativeWindow GetWindowUnderCursor() override;
+  bool IsWindowUnderCursor(gfx::NativeWindow window) override;
   gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point) override;
   int GetNumDisplays() const override;
   std::vector<display::Display> GetAllDisplays() const override;
   display::Display GetDisplayNearestWindow(gfx::NativeView view) const override;
   display::Display GetDisplayNearestPoint(
       const gfx::Point& point) const override;
   display::Display GetDisplayMatching(
       const gfx::Rect& match_rect) const override;
   display::Display GetPrimaryDisplay() const override;
   void AddObserver(display::DisplayObserver* observer) override;
@@ skipping 12 matching lines @@
   display::Screen* CloneForShutdown();
 
   base::ObserverList<display::DisplayObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenAsh);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_SCREEN_ASH_H_