Fix namespace for src/ui/display/.

ui/display/win/dpi.cc

 // Copyright 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/display/win/dpi.h"
 
 #include <windows.h>
 
 #include "base/win/scoped_hdc.h"
 #include "ui/display/display.h"
@@ skipping 31 matching lines @@
 }
 
 }  // namespace
 
 void SetDefaultDeviceScaleFactor(float scale) {
   DCHECK_NE(0.f, scale);
   g_device_scale_factor = scale;
 }
 
 float GetDPIScale() {
-  if (display::Display::HasForceDeviceScaleFactor())
-    return display::Display::GetForcedDeviceScaleFactor();
+  if (Display::HasForceDeviceScaleFactor())
+    return Display::GetForcedDeviceScaleFactor();
   return GetUnforcedDeviceScaleFactor();
 }
 
 int GetDPIFromScalingFactor(float device_scaling_factor) {
   return kDefaultDPI * device_scaling_factor;
 }
 
 float GetScalingFactorFromDPI(int dpi) {
   return static_cast<float>(dpi) / kDefaultDPI;
 }
 
 }  // namespace win
 }  // namespace display