Convert TimeFormat (chrome/common/time_format.*) to string16 (from wstring).

chrome/browser/chromeos/low_battery_observer.cc

 // Copyright (c) 2010 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/chromeos/low_battery_observer.h"
 
 #include "app/l10n_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/common/time_format.h"
 #include "grit/generated_resources.h"
@@ skipping 54 matching lines @@
     }
   } else {
     if (!line_power && remaining_minutes <= limit_min) {
       Show(remaining, urgent);
     }
   }
 }
 
 void LowBatteryObserver::Show(base::TimeDelta remaining, bool urgent) {
   notification_.Show(l10n_util::GetStringFUTF16(IDS_LOW_BATTERY_MESSAGE,
-      WideToUTF16(TimeFormat::TimeRemaining(remaining))), urgent);
+      TimeFormat::TimeRemaining(remaining)), urgent);
   remaining_ = remaining.InMinutes();
 }
 
 void LowBatteryObserver::Hide() {
   notification_.Hide();
 }
 
 }  // namespace chromeos