Fetch notification action icons and pass them through in resources.

content/common/platform_notification_messages.h

 // 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.
 
 // Messages for platform-native notifications using the Web Notification API.
 // Multiply-included message file, hence no include guard.
 
 #include <stdint.h>
 #include <string>
 #include <utility>
@@ skipping 42 matching lines @@
   IPC_STRUCT_TRAITS_MEMBER(timestamp)
   IPC_STRUCT_TRAITS_MEMBER(renotify)
   IPC_STRUCT_TRAITS_MEMBER(silent)
   IPC_STRUCT_TRAITS_MEMBER(require_interaction)
   IPC_STRUCT_TRAITS_MEMBER(data)
   IPC_STRUCT_TRAITS_MEMBER(actions)
 IPC_STRUCT_TRAITS_END()
 
 IPC_STRUCT_TRAITS_BEGIN(content::NotificationResources)
   IPC_STRUCT_TRAITS_MEMBER(notification_icon)
+  IPC_STRUCT_TRAITS_MEMBER(action_icons)
 IPC_STRUCT_TRAITS_END()
 
 // Messages sent from the browser to the renderer.
 
 // Informs the renderer that the browser has displayed the notification.
 IPC_MESSAGE_CONTROL1(PlatformNotificationMsg_DidShow,
                      int /* notification_id */)
 
 // Informs the renderer that the notification has been closed.
 IPC_MESSAGE_CONTROL1(PlatformNotificationMsg_DidClose,
@@ skipping 43 matching lines @@
 IPC_MESSAGE_CONTROL1(PlatformNotificationHostMsg_Close,
                      int /* notification_id */)
 
 IPC_MESSAGE_CONTROL2(PlatformNotificationHostMsg_ClosePersistent,
                      GURL /* origin */,
                      int64_t /* persistent_notification_id */)
 
 IPC_SYNC_MESSAGE_CONTROL1_1(PlatformNotificationHostMsg_CheckPermission,
                             GURL /* origin */,
                             blink::WebNotificationPermission /* result */)