Add data property in persistent web notification

public/platform/modules/notifications/WebNotificationData.h

 // Copyright 2014 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 WebNotificationData_h
 #define WebNotificationData_h
 
 #include "public/platform/WebString.h"
 #include "public/platform/WebURL.h"
 
 namespace blink {
 
 // Structure representing the data associated with a Web Notification.
 struct WebNotificationData {
     enum Direction {
         DirectionLeftToRight,
         DirectionRightToLeft
     };
 
     WebNotificationData()
         : direction(DirectionLeftToRight)
         , silent(false)
     {
     }
 
-    WebNotificationData(const WebString& title, Direction direction, const WebString& lang, const WebString& body, const WebString& tag, const WebURL& icon, bool silent)
+    WebNotificationData(const WebString& title, Direction direction, const WebString& lang, const WebString& body, const WebString& tag, const WebURL& icon, bool silent, const WebString& dataAsWireString)
         : title(title)
         , direction(direction)
         , lang(lang)
         , body(body)
         , tag(tag)
         , icon(icon)
         , silent(silent)
+        , dataAsWireString(dataAsWireString)
     {
     }
 
     WebString title;
     Direction direction;
     WebString lang;
     WebString body;
     WebString tag;
     WebURL icon;
     bool silent;
+    WebString dataAsWireString;

[Peter Beverloo, 2015/03/15 16:25:05]

Can we just call this "data"? I agree that its contents can be opaque to the
embedder, in which case it doesn't have to know that it's a serialized wire
string either :-).

[Sanghyun Park, 2015/03/15 17:45:05]

Thanks for your agree :).
I'll change this name to "data"

 };
 
 } // namespace blink
 
 #endif // WebNotificationData_h