Update some uses of char16 to use the base:: namespace.

ui/gfx/render_text_win.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/render_text_win.h"
 
 #include <algorithm>
 
 #include "base/i18n/break_iterator.h"
 #include "base/i18n/char_iterator.h"
@@ skipping 103 matching lines @@
     return;
   }
 
   const int current_style = (font->GetStyle() & kStyleMask);
   const int current_size = font->GetFontSize();
   if (current_style != target_style || current_size != font_size)
     *font = font->DeriveFont(font_size - current_size, target_style);
 }
 
 // Returns true if |c| is a Unicode BiDi control character.
-bool IsUnicodeBidiControlCharacter(char16 c) {
+bool IsUnicodeBidiControlCharacter(base::char16 c) {
   return c == base::i18n::kRightToLeftMark ||
          c == base::i18n::kLeftToRightMark ||
          c == base::i18n::kLeftToRightEmbeddingMark ||
          c == base::i18n::kRightToLeftEmbeddingMark ||
          c == base::i18n::kPopDirectionalFormatting ||
          c == base::i18n::kLeftToRightOverride ||
          c == base::i18n::kRightToLeftOverride;
 }
 
 // Returns the corresponding glyph range of the given character range.
@@ skipping 1134 matching lines @@
   size_t position = LayoutIndexToTextIndex(run->range.end());
   position = IndexOfAdjacentGrapheme(position, CURSOR_BACKWARD);
   return SelectionModel(position, CURSOR_FORWARD);
 }
 
 RenderText* RenderText::CreateInstance() {
   return new RenderTextWin;
 }
 
 }  // namespace gfx