mus: Keep track of the drag cursor during DnD operations.

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 102 matching lines @@
     last_accelerator_phase_ = phase;
   }
   ServerWindow* GetFocusedWindowForEventDispatcher() override {
     return focused_window_;
   }
   void SetNativeCapture(ServerWindow* window) override {}
   void ReleaseNativeCapture() override {
     if (delegate_)
       delegate_->ReleaseCapture();
   }
+  void UpdateNativeCursorFromDispatcher() override {}
   void OnCaptureChanged(ServerWindow* new_capture_window,
                         ServerWindow* old_capture_window) override {
     lost_capture_window_ = old_capture_window;
   }
   void OnMouseCursorLocationChanged(const gfx::Point& point) override {}
   void DispatchInputEventToWindow(ServerWindow* target,
                                   ClientSpecificId client_id,
                                   const ui::Event& event,
                                   Accelerator* accelerator) override {
     std::unique_ptr<DispatchedEventDetails> details(new DispatchedEventDetails);
@@ skipping 1571 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