Add the data attribute to the Notification object

Source/modules/notifications/Notification.h

Index: Source/modules/notifications/Notification.h
diff --git a/Source/modules/notifications/Notification.h b/Source/modules/notifications/Notification.h
index 4074afbeba9fe6eeb0739c61ab33505b0d1f502c..100c819b3e23e26db389248a6f0a5a4d9d5486b3 100644
--- a/Source/modules/notifications/Notification.h
+++ b/Source/modules/notifications/Notification.h
@@ -31,6 +31,7 @@
 #ifndef Notification_h
 #define Notification_h
 
+#include "bindings/core/v8/SerializedScriptValue.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "modules/EventTargetModules.h"
 #include "platform/AsyncMethodRunner.h"
@@ -76,6 +77,7 @@ public:
     void dispatchErrorEvent() override;
     void dispatchCloseEvent() override;
 
+    SerializedScriptValue* data() const { return m_data.get(); }
     String title() const { return m_title; }
     String dir() const { return m_dir; }
     String lang() const { return m_lang; }
@@ -115,6 +117,7 @@ private:
     // instance until the operation completes.
     void show();
 
+    void setData(PassRefPtr<SerializedScriptValue> data) { m_data = data; }

[Peter Beverloo, 2015/03/12 01:16:26]

nit: please place this under setSilent(). Generally, I try to follow the order
of the IDL file. Same with the getter and the member variable.

[Sanghyun Park, 2015/03/12 02:58:47]

I see. I'll move this under setSlient().

     void setDir(const String& dir) { m_dir = dir; }
     void setLang(const String& lang) { m_lang = lang; }
     void setBody(const String& body) { m_body = body; }
@@ -125,6 +128,7 @@ private:
     void setPersistentId(const String& persistentId) { m_persistentId = persistentId; }
 
 private:
+    RefPtr<SerializedScriptValue> m_data;
     String m_title;
     String m_dir;
     String m_lang;