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

ui/display/win/screen_win.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 "ui/display/win/screen_win.h"
 
 #include <windows.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 143 matching lines @@
   return nullptr;
 }
 
 gfx::Point ScreenWin::GetCursorScreenPoint() {
   POINT pt;
   ::GetCursorPos(&pt);
   gfx::Point cursor_pos_pixels(pt);
   return ScreenToDIPPoint(cursor_pos_pixels);
 }
 
-gfx::NativeWindow ScreenWin::GetWindowUnderCursor() {
+bool ScreenWin::IsWindowUnderCursor(gfx::NativeWindow window) {
   POINT cursor_loc;
   HWND hwnd =
       ::GetCursorPos(&cursor_loc) ? ::WindowFromPoint(cursor_loc) : nullptr;
-  return GetNativeWindowFromHWND(hwnd);
+  return GetNativeWindowFromHWND(hwnd) == window;
 }
 
 gfx::NativeWindow ScreenWin::GetWindowAtScreenPoint(const gfx::Point& point) {
   gfx::Point point_in_pixels = DIPToScreenPoint(point);
   return GetNativeWindowFromHWND(WindowFromPoint(point_in_pixels.ToPOINT()));
 }
 
 int ScreenWin::GetNumDisplays() const {
   return static_cast<int>(screen_win_displays_.size());
 }
@@ skipping 125 matching lines @@
   }
   // There is 1:1 correspondence between MONITORINFOEX and ScreenWinDisplay.
   // If we make it here, it means we have no displays and we should hand out the
   // default display.
   DCHECK_EQ(screen_win_displays_.size(), 0u);
   return ScreenWinDisplay();
 }
 
 }  // namespace win
 }  // namespace display