Make cursors work on win aura.

ui/views/widget/desktop_native_widget_aura.cc

 // Copyright (c) 2012 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 "ui/views/widget/desktop_native_widget_aura.h"
 
 #include "ui/aura/root_window.h"
 #include "ui/aura/root_window_host.h"
 #include "ui/aura/window.h"
 #include "ui/base/hit_test.h"
@@ skipping 280 matching lines @@
                             const gfx::Point& location,
                             int operation) {
 }
 
 void DesktopNativeWidgetAura::SchedulePaintInRect(const gfx::Rect& rect) {
   if (window_)
     window_->SchedulePaintInRect(rect);
 }
 
 void DesktopNativeWidgetAura::SetCursor(gfx::NativeCursor cursor) {
+  desktop_root_window_host_->AsRootWindowHost()->SetCursor(cursor);
 }
 
 void DesktopNativeWidgetAura::ClearNativeFocus() {
 }
 
 void DesktopNativeWidgetAura::FocusNativeView(gfx::NativeView native_view) {
 }
 
 gfx::Rect DesktopNativeWidgetAura::GetWorkAreaBoundsInScreen() const {
   return gfx::Rect(100, 100);
@@ skipping 120 matching lines @@
 ui::TouchStatus DesktopNativeWidgetAura::OnTouchEvent(ui::TouchEvent* event) {
   return ui::TOUCH_STATUS_UNKNOWN;
 }
 
 ui::EventResult DesktopNativeWidgetAura::OnGestureEvent(
     ui::GestureEvent* event) {
   return ui::ER_UNHANDLED;
 }
 
 }  // namespace views