Add the data attribute to the Notification object

Source/modules/notifications/Notification.cpp

Index: Source/modules/notifications/Notification.cpp
diff --git a/Source/modules/notifications/Notification.cpp b/Source/modules/notifications/Notification.cpp
index 1ae79f16e69b4af63edbbd9a5138601a727f6436..89fe61c4ffa0bb89b62a3e2a24cea916ee94f0f0 100644
--- a/Source/modules/notifications/Notification.cpp
+++ b/Source/modules/notifications/Notification.cpp
@@ -31,7 +31,11 @@
 #include "config.h"
 #include "modules/notifications/Notification.h"
 
+#include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/ScriptState.h"
+#include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/ScriptWrappable.h"
+#include "bindings/core/v8/SerializedScriptValueFactory.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/ExecutionContextTask.h"
@@ -72,6 +76,13 @@ Notification* Notification::create(ExecutionContext* context, const String& titl
         return nullptr;
     }
 
+    RefPtr<SerializedScriptValue> data;
+    if (options.hasData()) {
+        data = SerializedScriptValueFactory::instance().create(options.data(), nullptr, exceptionState, options.data().isolate());
+        if (exceptionState.hadException())
+            return nullptr;
+    }
+
     Notification* notification = new Notification(title, context);
 
     notification->setBody(options.body());
@@ -79,6 +90,7 @@ Notification* Notification::create(ExecutionContext* context, const String& titl
     notification->setLang(options.lang());
     notification->setDir(options.dir());
     notification->setSilent(options.silent());
+    notification->setSerializedData(data.release());
     if (options.hasIcon()) {
         KURL iconUrl = options.icon().isEmpty() ? KURL() : context->completeURL(options.icon());
         if (!iconUrl.isEmpty() && iconUrl.isValid())
@@ -272,6 +284,14 @@ bool Notification::hasPendingActivity() const
     return m_state == NotificationStateShowing || m_asyncRunner.isActive();
 }
 
+ScriptValue Notification::data(ScriptState* scriptState) const
+{
+    if (!m_serializedData)
+        return ScriptValue::createNull(scriptState);
+
+    return ScriptValue(scriptState, m_serializedData->deserialize(scriptState->isolate()));
+}
+
 DEFINE_TRACE(Notification)
 {
     RefCountedGarbageCollectedEventTargetWithInlineData<Notification>::trace(visitor);