mash: changes event dispatch to consider non-client area of all windows

services/ui/ws/event_dispatcher.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_EVENT_DISPATCHER_H_
 #define SERVICES_UI_WS_EVENT_DISPATCHER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 10 matching lines @@
 #include "ui/gfx/geometry/rect_f.h"
 
 namespace ui {
 class Event;
 class KeyEvent;
 class LocatedEvent;
 
 namespace ws {
 
 class Accelerator;
+struct DeepestWindow;
 class DragController;
 class DragSource;
 class DragTargetConnection;
 class EventDispatcherDelegate;
 class ServerWindow;
 
 namespace test {
 class EventDispatcherTestApi;
 }
 
@@ skipping 177 matching lines @@
   // unobserve a window, UnobserveWindow() should be called the same number of
   // times.
   void ObserveWindow(ServerWindow* winodw);
   void UnobserveWindow(ServerWindow* winodw);
 
   // Returns an Accelerator bound to the specified code/flags, and of the
   // matching |phase|. Otherwise returns null.
   Accelerator* FindAccelerator(const ui::KeyEvent& event,
                                const ui::mojom::AcceleratorPhase phase);
 
-  ServerWindow* FindDeepestVisibleWindowForEvents(gfx::Point* location);
+  DeepestWindow FindDeepestVisibleWindowForEvents(const gfx::Point& location);
 
   // Clears the implicit captures in |pointer_targets_|, with the exception of
   // |window|. |window| may be null. |client_id| is the target client of
   // |window|.
   void CancelImplicitCaptureExcept(ServerWindow* window,
                                    ClientSpecificId client_id);
 
   // ServerWindowObserver:
   void OnWillChangeWindowHierarchy(ServerWindow* window,
                                    ServerWindow* new_parent,
@@ skipping 39 matching lines @@
       AcceleratorMatchPhase::ANY;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(EventDispatcher);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_EVENT_DISPATCHER_H_