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

chrome/browser/signin/about_signin_internals.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/signin/about_signin_internals.h"
 
 #include "base/debug/trace_event.h"
 #include "base/hash.h"
 #include "base/i18n/time_formatting.h"
 #include "base/logging.h"
@@ skipping 41 matching lines @@
 }
 
 void AboutSigninInternals::NotifySigninValueChanged(
     const TimedSigninStatusField& field,
     const std::string& value) {
   unsigned int field_index = field - TIMED_FIELDS_BEGIN;
   DCHECK(field_index >= 0 &&
          field_index < signin_status_.timed_signin_fields.size());
 
   Time now = Time::NowFromSystemTime();
-  std::string time_as_str = UTF16ToUTF8(base::TimeFormatFriendlyDate(now));
+  std::string time_as_str =
+      base::UTF16ToUTF8(base::TimeFormatFriendlyDate(now));
   TimedSigninStatusValue timed_value(value, time_as_str);
 
   signin_status_.timed_signin_fields[field_index] = timed_value;
 
   // Also persist these values in the prefs.
   const std::string value_pref = SigninStatusFieldToString(field) + ".value";
   const std::string time_pref = SigninStatusFieldToString(field) + ".time";
   profile_->GetPrefs()->SetString(value_pref.c_str(), value);
   profile_->GetPrefs()->SetString(time_pref.c_str(), time_as_str);
 
@@ skipping 60 matching lines @@
 }
 
 Time AboutSigninInternals::GetTokenTime(
     const std::string& token_name) const {
   TokenInfoMap::const_iterator iter =
       signin_status_.token_info_map.find(token_name);
   if (iter == signin_status_.token_info_map.end())
     return base::Time();
   return base::Time::FromInternalValue(iter->second.time_internal);
 }