Use platform's device scale factor for cursor

ui/views/widget/desktop_aura/desktop_native_cursor_manager.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_aura/desktop_native_cursor_manager.h"
 
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/aura/window_tree_host.h"
 #include "ui/base/cursor/cursor_loader.h"
 #include "ui/views/widget/desktop_aura/desktop_cursor_loader_updater.h"
@@ skipping 22 matching lines @@
 }
 
 void DesktopNativeCursorManager::RemoveHost(aura::WindowTreeHost* host) {
   hosts_.erase(host);
 }
 
 void DesktopNativeCursorManager::SetDisplay(
     const gfx::Display& display,
     wm::NativeCursorManagerDelegate* delegate) {
   cursor_loader_->UnloadAll();
-  cursor_loader_->set_display(display);
+  cursor_loader_->set_rotation(display.rotation());
+  cursor_loader_->set_scale(display.device_scale_factor());
 
   if (cursor_loader_updater_.get())
     cursor_loader_updater_->OnDisplayUpdated(display, cursor_loader_.get());
 
   SetCursor(delegate->GetCursor(), delegate);
 }
 
 void DesktopNativeCursorManager::SetCursor(
     gfx::NativeCursor cursor,
     wm::NativeCursorManagerDelegate* delegate) {
@@ skipping 39 matching lines @@
   // TODO(erg): In the ash version, we set the last mouse location on Env. I'm
   // not sure this concept makes sense on the desktop.
 
   SetVisibility(delegate->IsCursorVisible(), delegate);
 
   for (Hosts::const_iterator i = hosts_.begin(); i != hosts_.end(); ++i)
     (*i)->dispatcher()->OnMouseEventsEnableStateChanged(enabled);
 }
 
 }  // namespace views