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

ui/aura/test/test_screen.cc

Index: ui/aura/test/test_screen.cc
diff --git a/ui/aura/test/test_screen.cc b/ui/aura/test/test_screen.cc
index 298c7d806e76976235170a763f5035566260f290..f87c4084fcc7c6da994426871c92ee92fbf39f52 100644
--- a/ui/aura/test/test_screen.cc
+++ b/ui/aura/test/test_screen.cc
@@ -126,8 +126,8 @@ gfx::Point TestScreen::GetCursorScreenPoint() {
   return Env::GetInstance()->last_mouse_location();
 }
 
-gfx::NativeWindow TestScreen::GetWindowUnderCursor() {
-  return GetWindowAtScreenPoint(GetCursorScreenPoint());
+bool TestScreen::IsWindowUnderCursor(gfx::NativeWindow window) {
+  return GetWindowAtScreenPoint(GetCursorScreenPoint()) == window;
 }
 
 gfx::NativeWindow TestScreen::GetWindowAtScreenPoint(const gfx::Point& point) {