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

chrome/browser/ui/autofill/autofill_dialog_models.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/autofill/autofill_dialog_models.h"
 
 #include "base/bind.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
@@ skipping 135 matching lines @@
 
 MonthComboboxModel::~MonthComboboxModel() {}
 
 int MonthComboboxModel::GetItemCount() const {
   // 12 months plus the empty entry.
   return 13;
 }
 
 // static
 base::string16 MonthComboboxModel::FormatMonth(int index) {
-  return ASCIIToUTF16(base::StringPrintf("%.2d", index));
+  return base::ASCIIToUTF16(base::StringPrintf("%.2d", index));
 }
 
 base::string16 MonthComboboxModel::GetItemAt(int index) {
   return index == 0 ?
       l10n_util::GetStringUTF16(IDS_AUTOFILL_DIALOG_PLACEHOLDER_EXPIRY_MONTH) :
       FormatMonth(index);
 }
 
 // YearComboboxModel -----------------------------------------------------------
 
@@ skipping 14 matching lines @@
 base::string16 YearComboboxModel::GetItemAt(int index) {
   if (index == 0) {
     return l10n_util::GetStringUTF16(
         IDS_AUTOFILL_DIALOG_PLACEHOLDER_EXPIRY_YEAR);
   }
 
   return base::IntToString16(this_year_ + index - 1);
 }
 
 }  // namespace autofill