Replace string16 with base::string16.

chrome/browser/chromeos/settings/system_settings_provider.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/chromeos/settings/system_settings_provider.h"
 
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "chromeos/login/login_state.h"
@@ skipping 19 matching lines @@
   system::TimezoneSettings::GetInstance()->RemoveObserver(this);
 }
 
 void SystemSettingsProvider::DoSet(const std::string& path,
                                    const base::Value& in_value) {
   // Non-guest users can change the time zone.
   if (!LoginState::Get()->IsUserAuthenticated())
     return;
 
   if (path == kSystemTimezone) {
-    string16 timezone_id;
+    base::string16 timezone_id;
     if (!in_value.GetAsString(&timezone_id))
       return;
     // This will call TimezoneChanged.
     system::TimezoneSettings::GetInstance()->SetTimezoneFromID(timezone_id);
   }
 }
 
 const base::Value* SystemSettingsProvider::Get(const std::string& path) const {
   if (path == kSystemTimezone)
     return timezone_value_.get();
@@ skipping 21 matching lines @@
       content::RenderWidgetHost::GetRenderWidgetHosts());
   while (content::RenderWidgetHost* widget = widgets->GetNextHost()) {
     if (widget->IsRenderView()) {
       content::RenderViewHost* view = content::RenderViewHost::From(widget);
       view->NotifyTimezoneChange();
     }
   }
 }
 
 }  // namespace chromeos