Add Notification images (Blink + desktop implementation)

third_party/WebKit/public/platform/modules/notifications/WebNotificationResources.h

 // Copyright 2016 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 WebNotificationResources_h
 #define WebNotificationResources_h
 
 #include "public/platform/WebVector.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
 namespace blink {
 
 // Structure representing the resources associated with a Web Notification.
 struct WebNotificationResources {
+    // Content image for the notification. The bitmap may be empty if the
+    // developer did not provide an image, or fetching of the image failed.
+    SkBitmap image;
+
     // Main icon for the notification. The bitmap may be empty if the developer
     // did not provide an icon, or fetching of the icon failed.
     SkBitmap icon;
 
     // Badge for the notification. The bitmap may be empty if the developer
     // did not provide a badge, or fetching of the badge failed.
     SkBitmap badge;
 
     // Icons for the actions. A bitmap may be empty if the developer did not
     // provide an icon, or fetching of the icon failed.
     WebVector<SkBitmap> actionIcons;
 };
 
 } // namespace blink
 
 #endif // WebNotificationResources_h