Implement a MoveCursorToScreenLocation for just the window manager.

services/ui/ws/window_manager_state.cc

 // 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.
 
 #include "services/ui/ws/window_manager_state.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 174 matching lines @@
 
 void WindowManagerState::ReleaseCaptureBlockedByModalWindow(
     const ServerWindow* modal_window) {
   event_dispatcher_.ReleaseCaptureBlockedByModalWindow(modal_window);
 }
 
 void WindowManagerState::ReleaseCaptureBlockedByAnyModalWindow() {
   event_dispatcher_.ReleaseCaptureBlockedByAnyModalWindow();
 }
 
+void WindowManagerState::SetCursorLocation(
+    const gfx::Point& screen_pixel_location) {
+  event_dispatcher()->SetMousePointerDisplayLocation(screen_pixel_location, -1);

[Elliot Glaysher, 2017/05/31 23:47:32]

This here is obviously incorrect in the multi-display case (though it works in
the single display case in tests), but I don't see an easy way to go from this
screen pixels to display location. Is there some helper function I've missed?

[riajiang, 2017/06/01 17:06:07]

In WindowTreeHost::MoveCursorToInternal, can we convert |host_location|
(screen-location-in-pixels?) to display-location-in-pixels by subtracting
GetLocationOnScreenInPixels() and then also pass display_id from there to
WindowTreeHostMus::MoveCursorToScreenLocationInPixels?

+  UpdateNativeCursorFromDispatcher();
+}
+
 void WindowManagerState::SetDragDropSourceWindow(
     DragSource* drag_source,
     ServerWindow* window,
     DragTargetConnection* source_connection,
     const std::unordered_map<std::string, std::vector<uint8_t>>& drag_data,
     uint32_t drag_operation) {
   int32_t drag_pointer = MouseEvent::kMousePointerId;
   if (in_flight_event_details_ &&
       in_flight_event_details_->event->IsPointerEvent()) {
     drag_pointer =
@@ skipping 555 matching lines @@
       window->RemoveObserver(this);
       orphaned_window_manager_display_roots_.erase(iter);
       return;
     }
   }
   NOTREACHED();
 }
 
 }  // namespace ws
 }  // namespace ui