Make event-targeting asynchronous in window server.

services/ui/ws/window_finder.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 SERVICES_UI_WS_WINDOW_FINDER_H_
 #define SERVICES_UI_WS_WINDOW_FINDER_H_
 
 namespace gfx {
 class Point;
 class Transform;
 }
 
 namespace ui {
 namespace ws {
 
 class ServerWindow;
 
 struct DeepestWindow {
   ServerWindow* window = nullptr;
   bool in_non_client_area = false;
 };
 
 // Finds the deepest visible child of |root| that should receive an event at
 // |location|. |location| is in the coordinate space of |root_window|. The
 // |window| field in the returned structure is set to the child window. If no
 // valid child window is found |window| is set to null.
-DeepestWindow FindDeepestVisibleWindowForEvents(ServerWindow* root_window,
-                                                const gfx::Point& location);
+DeepestWindow FindDeepestVisibleWindowForLocation(ServerWindow* root_window,
+                                                  const gfx::Point& location);
 
 // Retrieve the transform to the provided |window|'s coordinate space from the
 // root.
 gfx::Transform GetTransformToWindow(ServerWindow* window);
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_WINDOW_FINDER_H_