Revert of Use platform's device scale factor for cursor

ui/base/cursor/cursor_loader_ozone.cc

 // Copyright 2014 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/base/cursor/cursor_loader_ozone.h"
 
 #include "ui/base/cursor/cursor.h"
 #include "ui/base/cursor/ozone/cursor_factory_ozone.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/image/image_skia.h"
 
 namespace ui {
 
 CursorLoaderOzone::CursorLoaderOzone() {}
 
 CursorLoaderOzone::~CursorLoaderOzone() {}
 
 void CursorLoaderOzone::LoadImageCursor(int id,
                                         int resource_id,
                                         const gfx::Point& hot) {
   const gfx::ImageSkia* image =
       ResourceBundle::GetSharedInstance().GetImageSkiaNamed(resource_id);
   const gfx::ImageSkiaRep& image_rep =
-      image->GetRepresentation(scale());
+      image->GetRepresentation(display().device_scale_factor());
   SkBitmap bitmap = image_rep.sk_bitmap();
   cursors_[id] =
       CursorFactoryOzone::GetInstance()->CreateImageCursor(bitmap, hot);
 }
 
 void CursorLoaderOzone::LoadAnimatedCursor(int id,
                                            int resource_id,
                                            const gfx::Point& hot,
                                            int frame_delay_ms) {
   // TODO(dnicoara) Add support: crbug.com/343245
@@ skipping 24 matching lines @@
   }
 
   cursor->SetPlatformCursor(platform);
 }
 
 CursorLoader* CursorLoader::Create() {
   return new CursorLoaderOzone();
 }
 
 }  // namespace ui