Add badge to web notifications.

content/child/notifications/pending_notification.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 CONTENT_CHILD_NOTIFICATIONS_PENDING_NOTIFICATION_H_
 #define CONTENT_CHILD_NOTIFICATIONS_PENDING_NOTIFICATION_H_
 
 #include <vector>
 
 #include "base/callback_forward.h"
@@ skipping 30 matching lines @@
   NotificationResources GetResources() const;
 
  private:
   // Fetches an image using |image_web_url| asynchronously on the main thread.
   // The |image_callback| will be called on the worker thread.
   void FetchImageResource(const blink::WebURL& image_web_url,
                           const ImageLoadCompletedCallback& image_callback);
 
   // To be called on the worker thread when the notification icon has been
   // fetched.
-  void DidFetchNotificationIcon(const SkBitmap& notification_icon);
+  void DidFetchNotificationIcon(const SkBitmap& icon);
+
+  // To be called on the worker thread when the small notification icon has been
+  // fetched.
+  void DidFetchSmallIcon(const SkBitmap& icon);
 
   // To be called on the worker thread when an action icon has been fetched.
-  void DidFetchActionIcon(size_t action_index, const SkBitmap& action_icon);
+  void DidFetchActionIcon(size_t action_index, const SkBitmap& icon);
 
   scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
 
   SkBitmap notification_icon_;
 
+  SkBitmap small_icon_;
+
   std::vector<SkBitmap> action_icons_;
 
   base::Closure fetches_finished_barrier_closure_;
 
   std::vector<scoped_refptr<NotificationImageLoader>> image_loaders_;
 
   base::WeakPtrFactory<PendingNotification> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PendingNotification);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_NOTIFICATIONS_PENDING_NOTIFICATION_H_