Add the Blink APIs for the WebNotificationManager.

public/platform/WebNotificationData.h

Index: public/platform/WebNotificationData.h
diff --git a/public/platform/WebNotificationData.h b/public/platform/WebNotificationData.h
new file mode 100644
index 0000000000000000000000000000000000000000..2adf6cd4d361d9c6e3783dd841aebfdf9642de03
--- /dev/null
+++ b/public/platform/WebNotificationData.h
@@ -0,0 +1,45 @@
+// 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 "WebString.h"
+#include "WebURL.h"
+
+namespace blink {
+
+// Structure representing the data associated with a Web Notification.
+struct WebNotificationData {
+    enum Direction {
+        DirectionLeftToRight,
+        DirectionRightToLeft
+    };
+
+    WebNotificationData()
+        : direction(DirectionLeftToRight)
+    {
+    }
+
+    WebNotificationData(const WebString& title, Direction direction, const WebString& lang, const WebString& body, const WebString& tag, const WebURL& icon)
+        : title(title)
+        , direction(direction)
+        , lang(lang)
+        , body(body)
+        , tag(tag)
+        , icon(icon)
+    {
+    }
+
+    WebString title;
+    Direction direction;
+    WebString lang;
+    WebString body;
+    WebString tag;
+    WebURL icon;
+};
+
+} // namespace blink
+
+#endif // WebNotificationData_h