Implement the Notification `timestamp` property

third_party/WebKit/Source/modules/notifications/NotificationData.cpp

 // Copyright 2015 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.
 
 #include "modules/notifications/NotificationData.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "bindings/core/v8/SerializedScriptValueFactory.h"
 #include "core/dom/ExecutionContext.h"
 #include "modules/notifications/Notification.h"
 #include "modules/notifications/NotificationOptions.h"
 #include "modules/vibration/NavigatorVibration.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/weborigin/KURL.h"
+#include "wtf/CurrentTime.h"
 
 namespace blink {
 namespace {
 
 WebNotificationData::Direction toDirectionEnumValue(const String& direction)
 {
     if (direction == "ltr")
         return WebNotificationData::DirectionLeftToRight;
     if (direction == "rtl")
         return WebNotificationData::DirectionRightToLeft;
@@ skipping 23 matching lines @@
 
     // TODO(peter): Apply the appropriate CORS checks on the |iconUrl|.
     if (options.hasIcon() && !options.icon().isEmpty()) {
         iconUrl = executionContext->completeURL(options.icon());
         if (!iconUrl.isValid())
             iconUrl = KURL();
     }
 
     webData.icon = iconUrl;
     webData.vibrate = NavigatorVibration::sanitizeVibrationPattern(options.vibrate());
+    webData.timestamp = options.hasTimestamp() ? static_cast<double>(options.timestamp()) : WTF::currentTimeMS();
     webData.silent = options.silent();
     webData.requireInteraction = options.requireInteraction();
 
     if (options.hasData()) {
         RefPtr<SerializedScriptValue> serializedScriptValue = SerializedScriptValueFactory::instance().create(options.data().isolate(), options.data(), nullptr, exceptionState);
         if (exceptionState.hadException())
             return WebNotificationData();
 
         Vector<char> serializedData;
         serializedScriptValue->toWireBytes(serializedData);
@@ skipping 14 matching lines @@
 
         actions.append(webAction);
     }
 
     webData.actions = actions;
 
     return webData;
 }
 
 } // namespace blink