Add badge to web notifications.

content/public/common/platform_notification_data.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.
 
 #ifndef CONTENT_PUBLIC_COMMON_PLATFORM_NOTIFICATION_DATA_H_
 #define CONTENT_PUBLIC_COMMON_PLATFORM_NOTIFICATION_DATA_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 53 matching lines @@
   // Contents of the notification.
   base::string16 body;
 
   // Tag of the notification. Notifications sharing both their origin and their
   // tag will replace the first displayed notification.
   std::string tag;
 
   // URL of the icon which is to be displayed with the notification.
   GURL icon;
 
+  // URL of the small icon for representing the notification. May be empty if
+  // no url was specified.
+  GURL small_icon;
+
   // Vibration pattern for the notification, following the syntax of the
   // Vibration API. https://www.w3.org/TR/vibration/
   std::vector<int> vibration_pattern;
 
   // The time at which the event the notification represents took place.
   base::Time timestamp;
 
   // Whether default notification indicators (sound, vibration, light) should
   // be played again if the notification is replacing an older notification.
   bool renotify = false;
@@ skipping 10 matching lines @@
   // a serialized string. Must not exceed |kMaximumDeveloperDataSize| bytes.
   std::vector<char> data;
 
   // Actions that should be shown as buttons on the notification.
   std::vector<PlatformNotificationAction> actions;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_PLATFORM_NOTIFICATION_DATA_H_