Update some uses of UTF conversions in chrome/browser to use the base:: namespace.

chrome/browser/ui/gtk/content_setting_bubble_gtk.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 "chrome/browser/ui/gtk/content_setting_bubble_gtk.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
@@ skipping 29 matching lines @@
 
 // The maximum width of a title entry in the content box. We elide anything
 // longer than this.
 const int kMaxLinkPixelSize = 500;
 
 // The minimum and maximum width of the media menu buttons.
 const int kMinMediaMenuButtonWidth = 100;
 const int kMaxMediaMenuButtonWidth = 600;
 
 std::string BuildElidedText(const std::string& input) {
-  return UTF16ToUTF8(gfx::ElideText(
-      UTF8ToUTF16(input),
+  return base::UTF16ToUTF8(gfx::ElideText(
+      base::UTF8ToUTF16(input),
       gfx::Font(),
       kMaxLinkPixelSize,
       gfx::ELIDE_AT_END));
 }
 
 }  // namespace
 
 ContentSettingBubbleGtk::ContentSettingBubbleGtk(
     GtkWidget* anchor,
     BubbleDelegateGtk* delegate,
@@ skipping 321 matching lines @@
   GtkMediaMenuMap::iterator i(media_menus_.find(button));
   DCHECK(i != media_menus_.end());
   i->second->menu->PopupForWidget(button, 1, gtk_get_current_event_time());
 }
 
 ContentSettingBubbleGtk::MediaMenuGtk::MediaMenuGtk(
     content::MediaStreamType type)
     : type(type) {}
 
 ContentSettingBubbleGtk::MediaMenuGtk::~MediaMenuGtk() {}