Convert string16 to base::string16 in content.

content/public/common/show_desktop_notification_params.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_COMMON_SHOW_DESKTOP_NOTIFICATION_PARAMS_H_
 #define CONTENT_PUBLIC_COMMON_SHOW_DESKTOP_NOTIFICATION_PARAMS_H_
 
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/web/WebTextDirection.h"
 #include "url/gurl.h"
 
 namespace content {
 
 // Parameters used when showing an HTML5 notification.
 struct CONTENT_EXPORT ShowDesktopNotificationHostMsgParams {
   ShowDesktopNotificationHostMsgParams();
   ~ShowDesktopNotificationHostMsgParams();
 
   // URL which is the origin that created this notification.
   GURL origin;
 
   // Contents of the notification if is_html is false.
   GURL icon_url;
-  string16 title;
-  string16 body;
+  base::string16 title;
+  base::string16 body;
 
   // Directionality of the notification.
   blink::WebTextDirection direction;
 
   // ReplaceID if this notification should replace an existing one; may be
   // empty if no replacement is called for.
-  string16 replace_id;
+  base::string16 replace_id;
 
   // Notification ID for sending events back for this notification.
   int notification_id;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_SHOW_DESKTOP_NOTIFICATION_PARAMS_H_