Updates subpixel positioning and hinting when DSF is changed

ui/gfx/platform_font_win.h

 // 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.
 
 #ifndef UI_GFX_PLATFORM_FONT_WIN_H_
 #define UI_GFX_PLATFORM_FONT_WIN_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 48 matching lines @@
   // Overridden from PlatformFont:
   virtual Font DeriveFont(int size_delta, int style) const override;
   virtual int GetHeight() const override;
   virtual int GetBaseline() const override;
   virtual int GetCapHeight() const override;
   virtual int GetExpectedTextWidth(int length) const override;
   virtual int GetStyle() const override;
   virtual std::string GetFontName() const override;
   virtual std::string GetActualFontNameForTesting() const override;
   virtual int GetFontSize() const override;
-  virtual const FontRenderParams& GetFontRenderParams() const override;
+  virtual const FontRenderParams& GetFontRenderParams() override;
   virtual NativeFont GetNativeFont() const override;
 
   // Called once during initialization if we should be retrieving font metrics
   // from skia and DirectWrite.
   static void SetDirectWriteFactory(IDWriteFactory* factory);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_UniscribeFallback);
 
   virtual ~PlatformFontWin() {}
@@ skipping 103 matching lines @@
 
   // Pointer to the global IDWriteFactory interface.
   static IDWriteFactory* direct_write_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformFontWin);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_PLATFORM_FONT_WIN_H_