Refactor ozone drm cursor code for mojo

ui/ozone/platform/drm/gpu/drm_thread.cc

 // Copyright 2015 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/ozone/platform/drm/gpu/drm_thread.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 157 matching lines @@
 }
 
 void DrmThread::SetCursor(gfx::AcceleratedWidget widget,
                           const std::vector<SkBitmap>& bitmaps,
                           const gfx::Point& location,
                           int frame_delay_ms) {
   screen_manager_->GetWindow(widget)
       ->SetCursor(bitmaps, location, frame_delay_ms);
 }
 
-void DrmThread::MoveCursor(gfx::AcceleratedWidget widget,
+void DrmThread::MoveCursor(const gfx::AcceleratedWidget& widget,
                            const gfx::Point& location) {
   screen_manager_->GetWindow(widget)->MoveCursor(location);
 }
 
 void DrmThread::CheckOverlayCapabilities(
     gfx::AcceleratedWidget widget,
     const std::vector<OverlayCheck_Params>& overlays,
     const base::Callback<void(gfx::AcceleratedWidget,
                               const std::vector<OverlayCheck_Params>&)>&
         callback) {
@@ skipping 58 matching lines @@
 void DrmThread::SetColorCorrection(
     int64_t display_id,
     const std::vector<GammaRampRGBEntry>& degamma_lut,
     const std::vector<GammaRampRGBEntry>& gamma_lut,
     const std::vector<float>& correction_matrix) {
   display_manager_->SetColorCorrection(display_id, degamma_lut, gamma_lut,
                                        correction_matrix);
 }
 
 }  // namespace ui