Implement cursor compositing mode on Ash

ash/display/mouse_cursor_event_filter.cc

Index: ash/display/mouse_cursor_event_filter.cc
diff --git a/ash/display/mouse_cursor_event_filter.cc b/ash/display/mouse_cursor_event_filter.cc
index bc1368f681dda458089ac930d8f99a788b536cf6..9925f39c8e5f0ff451f571998fb0dbd491f53bde 100644
--- a/ash/display/mouse_cursor_event_filter.cc
+++ b/ash/display/mouse_cursor_event_filter.cc
@@ -4,9 +4,9 @@
 
 #include "ash/display/mouse_cursor_event_filter.h"
 
+#include "ash/display/cursor_window_controller.h"
 #include "ash/display/display_controller.h"
 #include "ash/display/display_manager.h"
-#include "ash/display/mirror_window_controller.h"
 #include "ash/display/shared_display_edge_indicator.h"
 #include "ash/screen_util.h"
 #include "ash/shell.h"
@@ -89,8 +89,9 @@ void MouseCursorEventFilter::OnMouseEvent(ui::MouseEvent* event) {
       event->type() != ui::ET_MOUSE_DRAGGED) {
       return;
   }
+
   Shell::GetInstance()->display_controller()->
-      mirror_window_controller()->UpdateCursorLocation();
+      cursor_window_controller()->UpdateLocation();
 
   gfx::Point point_in_screen(event->location());
   aura::Window* target = static_cast<aura::Window*>(event->target());