Cleanup: Enable 125DSFForUIScaling on by default

ash/display/display_info_unittest.cc

 // Copyright (c) 2013 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/display/display_info.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace ash {
 namespace {
@@ skipping 92 matching lines @@
   EXPECT_EQ("1920x1275", GetModeSizeInDIP(size, 2.0f, 1.5f, true));
   EXPECT_EQ("1600x1062", GetModeSizeInDIP(size, 2.0f, 1.25f, true));
   EXPECT_EQ("1440x956", GetModeSizeInDIP(size, 2.0f, 1.125f, true));
   EXPECT_EQ("1280x850", GetModeSizeInDIP(size, 2.0f, 1.0f, true));
   EXPECT_EQ("1024x680", GetModeSizeInDIP(size, 2.0f, 0.8f, true));
   EXPECT_EQ("800x531", GetModeSizeInDIP(size, 2.0f, 0.625f, true));
   EXPECT_EQ("640x425", GetModeSizeInDIP(size, 2.0f, 0.5f, true));
 }
 
 TEST_F(DisplayInfoTest, DisplayModeGetSizeInDIP125) {
-  DisplayInfo::SetUse125DSFForUIScaling(true);
   gfx::Size size(1920, 1080);
   EXPECT_EQ("2400x1350", GetModeSizeInDIP(size, 1.25f, 1.25f, true));
   EXPECT_EQ("1920x1080", GetModeSizeInDIP(size, 1.25f, 1.0f, true));
   EXPECT_EQ("1536x864", GetModeSizeInDIP(size, 1.25f, 0.8f, true));
   EXPECT_EQ("1200x675", GetModeSizeInDIP(size, 1.25f, 0.625f, true));
   EXPECT_EQ("960x540", GetModeSizeInDIP(size, 1.25f, 0.5f, true));
-  DisplayInfo::SetUse125DSFForUIScaling(false);
 }
 
 TEST_F(DisplayInfoTest, DisplayModeGetSizeForExternal4K) {
-  DisplayInfo::SetUse125DSFForUIScaling(true);
   gfx::Size size(3840, 2160);
   EXPECT_EQ("1920x1080", GetModeSizeInDIP(size, 2.0f, 1.0f, false));
   EXPECT_EQ("3072x1728", GetModeSizeInDIP(size, 1.25f, 1.0f, false));
   EXPECT_EQ("3840x2160", GetModeSizeInDIP(size, 1.0f, 1.0f, false));
-  DisplayInfo::SetUse125DSFForUIScaling(false);
 }
 
 }  // namespace ash