Find display root ServerWindow for located events in mus.

services/ui/ws/event_dispatcher_unittest.cc

 // 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.
 
 #include "services/ui/ws/event_dispatcher.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <queue>
@@ skipping 122 matching lines @@
     details->window = target;
     details->client_id = client_id;
     details->event = ui::Event::Clone(event);
     details->accelerator = accelerator;
     dispatched_event_queue_.push(std::move(details));
   }
   ClientSpecificId GetEventTargetClientId(const ServerWindow* window,
                                           bool in_nonclient_area) override {
     return in_nonclient_area ? kNonclientAreaId : kClientAreaId;
   }
-  ServerWindow* GetRootWindowContaining(const gfx::Point& location) override {
+  ServerWindow* GetRootWindowContaining(gfx::Point* location) override {
     return root_;
   }
   void OnEventTargetNotFound(const ui::Event& event) override {
     last_event_target_not_found_ = ui::Event::Clone(event);
   }
 
   Delegate* delegate_;
   ServerWindow* focused_window_;
   ServerWindow* lost_capture_window_;
   uint32_t last_accelerator_;
@@ skipping 1552 matching lines @@
   // The delegate can decide if it really wants to forward the event or not.
   EXPECT_EQ(child.get(),
             test_event_dispatcher_delegate()->lost_capture_window());
   EXPECT_EQ(child.get(), event_dispatcher()->capture_window());
   EXPECT_EQ(kClientAreaId, event_dispatcher()->capture_window_client_id());
 }
 
 }  // namespace test
 }  // namespace ws
 }  // namespace ui