remove ui::gfx::GetDeviceScaleFactor

ui/base/layout.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/base/layout.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 
@@ skipping 67 matching lines @@
       smallest_diff = diff;
     }
   }
   DCHECK_NE(closest_match, SCALE_FACTOR_NONE);
   return closest_match;
 }
 
 float GetImageScale(ScaleFactor scale_factor) {
 #if defined(OS_WIN)
   if (gfx::IsHighDPIEnabled())
-    return gfx::win::GetDeviceScaleFactor();
+    return gfx::GetDPIScale();
 #endif
   return GetScaleForScaleFactor(scale_factor);
 }
 
 float GetScaleForScaleFactor(ScaleFactor scale_factor) {
   return kScaleFactorScales[scale_factor];
 }
 
 namespace test {
 
@@ skipping 22 matching lines @@
 
 #if !defined(OS_MACOSX)
 float GetScaleFactorForNativeView(gfx::NativeView view) {
   gfx::Screen* screen = gfx::Screen::GetScreenFor(view);
   gfx::Display display = screen->GetDisplayNearestWindow(view);
   return display.device_scale_factor();
 }
 #endif  // !defined(OS_MACOSX)
 
 }  // namespace ui