Replace string16 with base::string16.

chrome/browser/chromeos/ui/screen_capture_notification_ui_chromeos.cc

 // Copyright 2013 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/ui/screen_capture_notification_ui_chromeos.h"
 
 #include "ash/shell.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace chromeos {
 
 ScreenCaptureNotificationUIChromeOS::ScreenCaptureNotificationUIChromeOS(
-    const string16& text)
+    const base::string16& text)
     : text_(text) {
 }
 
 ScreenCaptureNotificationUIChromeOS::~ScreenCaptureNotificationUIChromeOS() {
   // MediaStreamCaptureIndicator will delete ScreenCaptureNotificationUI object
   // after it stops screen capture.
   ash::Shell::GetInstance()->system_tray_notifier()->NotifyScreenCaptureStop();
 }
 
 void ScreenCaptureNotificationUIChromeOS::OnStarted(
     const base::Closure& stop_callback) {
   ash::Shell::GetInstance()->system_tray_notifier()->NotifyScreenCaptureStart(
       stop_callback, text_);
 }
 
 }  // namespace chromeos
 
 // static
 scoped_ptr<ScreenCaptureNotificationUI> ScreenCaptureNotificationUI::Create(
-    const string16& text) {
+    const base::string16& text) {
   return scoped_ptr<ScreenCaptureNotificationUI>(
       new chromeos::ScreenCaptureNotificationUIChromeOS(text));
 }