Move a bunch of windows stuff from ui/base/win to ui/gfx/win

ui/gfx/utf16_indexing.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_BASE_TEXT_UTF16_INDEXING_H_
-#define UI_BASE_TEXT_UTF16_INDEXING_H_
+#ifndef UI_GFX_UTF16_INDEXING_H_
+#define UI_GFX_UTF16_INDEXING_H_
 
 #include "base/strings/string16.h"
-#include "ui/base/ui_export.h"
+#include "ui/gfx/gfx_export.h"
 
-namespace ui {
+namespace gfx {
 
 // Returns false if s[index-1] is a high surrogate and s[index] is a low
 // surrogate, true otherwise.
 UI_EXPORT bool IsValidCodePointIndex(const string16& s, size_t index);
 
 // |UTF16IndexToOffset| returns the number of code points between |base| and
 // |pos| in the given string. |UTF16OffsetToIndex| returns the index that is
 // |offset| code points away from the given |base| index. These functions are
 // named after glib's |g_utf8_pointer_to_offset| and |g_utf8_offset_to_pointer|,
 // which perform the same function for UTF-8. As in glib, it is an error to
@@ skipping 15 matching lines @@
 //   Always,
 //     UTF16IndexToOffset(s, base, UTF16OffsetToIndex(s, base, ofs)) == ofs
 //     UTF16IndexToOffset(s, i, j) == -UTF16IndexToOffset(s, j, i)
 UI_EXPORT ptrdiff_t UTF16IndexToOffset(const string16& s,
                                        size_t base,
                                        size_t pos);
 UI_EXPORT size_t UTF16OffsetToIndex(const string16& s,
                                     size_t base,
                                     ptrdiff_t offset);
 
-}  // namespace ui
+}  // namespace gfx
 
-#endif  // UI_BASE_TEXT_UTF16_INDEXING_H_
+#endif  // UI_GFX_UTF16_INDEXING_H_