Remove some unused ui/gfx code.

ui/gfx/win/direct_write.h

Index: ui/gfx/win/direct_write.h
diff --git a/ui/gfx/win/direct_write.h b/ui/gfx/win/direct_write.h
deleted file mode 100644
index b621bf8d284b6603ac1f0c825088cf9a7ea54017..0000000000000000000000000000000000000000
--- a/ui/gfx/win/direct_write.h
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright 2014 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_WIN_DIRECT_WRITE_H_
-#define UI_GFX_WIN_DIRECT_WRITE_H_
-
-#include "ui/gfx/gfx_export.h"
-
-namespace gfx {
-namespace win {
-
-// Returns whether DirectWrite font rendering should be used.
-GFX_EXPORT bool ShouldUseDirectWrite();
-
-}  // namespace win
-}  // namespace gfx
-
-#endif  // UI_GFX_WIN_DIRECT_WRITE_H_