Find display root ServerWindow for located events in mus.

services/ui/ws/window_manager_state.h

 // Copyright 2016 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_MANAGER_STATE_H_
 #define SERVICES_UI_WS_WINDOW_MANAGER_STATE_H_
 
 #include <stdint.h>
 
 #include <memory>
+#include <queue>
 #include <vector>
 
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
 #include "services/ui/public/interfaces/display.mojom.h"
 #include "services/ui/ws/event_dispatcher.h"
 #include "services/ui/ws/event_dispatcher_delegate.h"
 #include "services/ui/ws/user_id.h"
 #include "services/ui/ws/window_server.h"
 
@@ skipping 163 matching lines @@
   void ReleaseNativeCapture() override;
   void OnCaptureChanged(ServerWindow* new_capture,
                         ServerWindow* old_capture) override;
   void OnMouseCursorLocationChanged(const gfx::Point& point) override;
   void DispatchInputEventToWindow(ServerWindow* target,
                                   ClientSpecificId client_id,
                                   const ui::Event& event,
                                   Accelerator* accelerator) override;
   ClientSpecificId GetEventTargetClientId(const ServerWindow* window,
                                           bool in_nonclient_area) override;
-  ServerWindow* GetRootWindowContaining(const gfx::Point& location) override;
+  ServerWindow* GetRootWindowContaining(gfx::Point* location) override;
   void OnEventTargetNotFound(const ui::Event& event) override;
 
   // The single WindowTree this WindowManagerState is associated with.
   // |window_tree_| owns this.
   WindowTree* window_tree_;
 
   // Set to true the first time SetFrameDecorationValues() is called.
   bool got_frame_decoration_values_ = false;
   mojom::FrameDecorationValuesPtr frame_decoration_values_;
 
@@ skipping 15 matching lines @@
 
   base::WeakPtrFactory<WindowManagerState> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManagerState);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_WINDOW_MANAGER_STATE_H_