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

blimp/engine/app/ui/blimp_screen.h

 // Copyright 2015 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 BLIMP_ENGINE_APP_UI_BLIMP_SCREEN_H_
 #define BLIMP_ENGINE_APP_UI_BLIMP_SCREEN_H_
 
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 16 matching lines @@
 
   void set_window_tree_host(aura::WindowTreeHost* window_tree_host) {
     window_tree_host_ = window_tree_host;
   }
 
   // Updates the size reported by the primary display.
   void UpdateDisplayScaleAndSize(float scale, const gfx::Size& size);
 
   // display::Screen implementation.
   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;
   void RemoveObserver(display::DisplayObserver* observer) override;
 
  private:
   aura::WindowTreeHost* window_tree_host_;
   display::Display display_;
   base::ObserverList<display::DisplayObserver> observers_;
   DISALLOW_COPY_AND_ASSIGN(BlimpScreen);
 };
 
 }  // namespace engine
 }  // namespace blimp
 
 #endif  // BLIMP_ENGINE_APP_UI_BLIMP_SCREEN_H_