Remove some unused ui/gfx code.

ui/gfx/win/direct_write.cc

Index: ui/gfx/win/direct_write.cc
diff --git a/ui/gfx/win/direct_write.cc b/ui/gfx/win/direct_write.cc
deleted file mode 100644
index 058f4be01deeaf50d02e11e2682cc4882c6f6b36..0000000000000000000000000000000000000000
--- a/ui/gfx/win/direct_write.cc
+++ /dev/null
@@ -1,63 +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.
-
-#include "ui/gfx/win/direct_write.h"
-
-#include "base/basictypes.h"
-#include "base/command_line.h"
-#include "base/metrics/field_trial.h"
-#include "base/win/registry.h"
-#include "base/win/windows_version.h"
-#include "ui/gfx/switches.h"
-#include "ui/gfx/win/dpi.h"
-
-namespace gfx {
-namespace win {
-
-bool ShouldUseDirectWrite() {
-  // If the flag is currently on, and we're on Win7 or above, we enable
-  // DirectWrite. Skia does not require the additions to DirectWrite in QFE
-  // 2670838, but a simple 'better than XP' check is not enough.
-  if (base::win::GetVersion() < base::win::VERSION_WIN7)
-    return false;
-
-  base::win::OSInfo::VersionNumber os_version =
-      base::win::OSInfo::GetInstance()->version_number();
-  if ((os_version.major == 6) && (os_version.minor == 1)) {
-    // We can't use DirectWrite for pre-release versions of Windows 7.
-    if (os_version.build < 7600)
-      return false;
-  }
-  // If forced off, don't use it.
-  const base::CommandLine& command_line =
-      *base::CommandLine::ForCurrentProcess();
-  if (command_line.HasSwitch(switches::kDisableDirectWrite))
-    return false;
-
-  // Can't use GDI on HiDPI.
-  if (gfx::GetDPIScale() > 1.0f)
-    return true;
-
-  // We have logic in renderer_font_platform_win.cc for falling back to safe
-  // font list if machine has more than 1750 fonts installed. Users have
-  // complained about this as safe font list is usually not sufficient.
-  // We now disable direct write (gdi) if we encounter more number
-  // of fonts than a threshold (currently 1750).
-  // Refer: crbug.com/421305
-  const wchar_t kWindowsFontsRegistryKey[] =
-      L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Fonts";
-  base::win::RegistryValueIterator reg_iterator(HKEY_LOCAL_MACHINE,
-                                                kWindowsFontsRegistryKey);
-  const DWORD kMaxAllowedFontsBeforeFallbackToGDI = 1750;
-  if (reg_iterator.ValueCount() >= kMaxAllowedFontsBeforeFallbackToGDI)
-    return false;
-
-  // Otherwise, check the field trial.
-  const std::string group_name =
-      base::FieldTrialList::FindFullName("DirectWrite");
-  return group_name != "Disabled";
-}
-
-}  // namespace win
-}  // namespace gfx