Cleanup: Enable 125DSFForUIScaling on by default

ash/test/display_manager_test_api.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 "ash/test/display_manager_test_api.h"
 
 #include <vector>
 
 #include "ash/ash_switches.h"
 #include "ash/display/display_info.h"
@@ skipping 151 matching lines @@
   display_manager_->set_change_display_upon_host_resize(false);
 }
 
 void DisplayManagerTestApi::SetAvailableColorProfiles(
     int64 display_id,
     const std::vector<ui::ColorCalibrationProfile>& profiles) {
   display_manager_->display_info_[display_id].set_available_color_profiles(
       profiles);
 }
 
+ScopedDisable125DSFForUIScaling::ScopedDisable125DSFForUIScaling() {
+  DisplayInfo::SetUse125DSFForUIScalingForTest(false);
+}
+
+ScopedDisable125DSFForUIScaling::~ScopedDisable125DSFForUIScaling() {
+  DisplayInfo::SetUse125DSFForUIScalingForTest(true);
+}
+
 }  // namespace test
 }  // namespace ash