Add the data attribute to the Notification object

public/platform/modules/notifications/WebNotificationData.h

Index: public/platform/modules/notifications/WebNotificationData.h
diff --git a/public/platform/modules/notifications/WebNotificationData.h b/public/platform/modules/notifications/WebNotificationData.h
index 537ed26aa7edaf5b6c892db2cc01cd45f72cf586..e979d385c1fce807089a9853ef6dfb6498e46b11 100644
--- a/public/platform/modules/notifications/WebNotificationData.h
+++ b/public/platform/modules/notifications/WebNotificationData.h
@@ -7,6 +7,7 @@
 
 #include "public/platform/WebString.h"
 #include "public/platform/WebURL.h"
+#include "public/web/WebSerializedScriptValue.h"

[Peter Beverloo, 2015/03/12 20:30:46]

public/platform/ (where this files live in) cannot depend on public/web/ :-(.

There's a FIXME in WebSerializedScriptValue about it being in platform.

Because that's another larger issue, perhaps you can consider reverting the
changes in ServiceWorkerRegistrationNotifications.* and WebNotificationData.h in
this patch, and landing the implementation for non-persistent notifications
first.

Then, as a follow-up, pursue moving WebSerializedScriptValue to platform and
updating this code path to pass a WebSerializedScriptValue to the embedder?

[Sanghyun Park, 2015/03/13 02:57:07]

I refer the this document about this.
[1] http://www.chromium.org/blink/public-c-api
"shows the overall dependency layers. Things higher up in the diagram depend
only on things below them." is described in this document.
According to the above, "Blink public platform API" can depend on  "Blink public
web API".

If my understanding is wrong, please let me know..

[Sanghyun Park, 2015/03/13 07:58:08]

Oops. I'm misunderstanding, At first, I'll split the patch.
and I'll consider about this.

 
 namespace blink {
 
@@ -35,7 +36,7 @@ struct WebNotificationData {
     {
     }
 
-    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 WebSerializedScriptValue& data)
         : title(title)
         , direction(direction)
         , lang(lang)
@@ -43,6 +44,7 @@ struct WebNotificationData {
         , tag(tag)
         , icon(icon)
         , silent(silent)
+        , data(data)
     {
     }
 
@@ -53,6 +55,7 @@ struct WebNotificationData {
     WebString tag;
     WebURL icon;
     bool silent;
+    WebSerializedScriptValue data;
 };
 
 } // namespace blink