mus: Implement ScreenMus::GetCursorScreenPoint().

components/mus/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 "components/mus/ws/event_dispatcher.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <queue>
@@ skipping 78 matching lines @@
     last_accelerator_ = accelerator;
   }
   ServerWindow* GetFocusedWindowForEventDispatcher() override {
     return focused_window_;
   }
   void SetNativeCapture() override {}
   void ReleaseNativeCapture() override {}
   void OnServerWindowCaptureLost(ServerWindow* window) override {
     lost_capture_window_ = window;
   }
+  void OnMouseCursorLocationChanged(const gfx::Point& point) override {}
   void DispatchInputEventToWindow(ServerWindow* target,
                                   bool in_nonclient_area,
                                   const ui::Event& event,
                                   Accelerator* accelerator) override {
     std::unique_ptr<DispatchedEventDetails> details(new DispatchedEventDetails);
     details->window = target;
     details->in_nonclient_area = in_nonclient_area;
     details->event = ui::Event::Clone(event);
     details->accelerator = accelerator;
     dispatched_event_queue_.push(std::move(details));
@@ skipping 1254 matching lines @@
   w1->AddTransientWindow(w2.get());
   w2->SetModal();
 
   EXPECT_TRUE(event_dispatcher()->SetCaptureWindow(w3.get(), false));
   EXPECT_EQ(w3.get(), event_dispatcher()->capture_window());
 }
 
 }  // namespace test
 }  // namespace ws
 }  // namespace mus