Updates subpixel positioning and hinting when DSF is changed

ui/gfx/font.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/gfx/font.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/gfx/platform_font.h"
 
 namespace gfx {
@@ skipping 56 matching lines @@
 }
 
 std::string Font::GetActualFontNameForTesting() const {
   return platform_font_->GetActualFontNameForTesting();
 }
 
 int Font::GetFontSize() const {
   return platform_font_->GetFontSize();
 }
 
-const FontRenderParams& Font::GetFontRenderParams() const {
-  return platform_font_->GetFontRenderParams();
+FontRenderParams Font::GetFontRenderParams() const {
+  FontRenderParams params = platform_font_->GetFontRenderParams();
+  gfx::FontRenderParamsRewriter* rewriter =
+      gfx::FontRenderParamsRewriter::GetInstance();
+  if (rewriter)
+    rewriter->RewriteParams(&params);
+  return params;
 }
 
 NativeFont Font::GetNativeFont() const {
   return platform_font_->GetNativeFont();
 }
 
 }  // namespace gfx