Adds a small icon to notifications, and connects it to synced notifications.

ui/message_center/notification_list.cc

 // Copyright (c) 2012 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 "ui/message_center/notification_list.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/time/time.h"
@@ skipping 140 matching lines @@
 bool NotificationList::SetNotificationButtonIcon(
     const std::string& notification_id, int button_index,
     const gfx::Image& image) {
   Notifications::iterator iter = GetNotification(notification_id);
   if (iter == notifications_.end())
     return false;
   (*iter)->SetButtonIcon(button_index, image);
   return true;
 }
 
+bool NotificationList::SetNotificationSmallImage(
+    const std::string& notification_id,
+    const gfx::Image& image) {
+  Notifications::iterator iter = GetNotification(notification_id);
+  if (iter == notifications_.end())
+    return false;
+  (*iter)->set_small_image(image);
+  return true;
+}
+
 bool NotificationList::HasNotification(const std::string& id) {
   return GetNotification(id) != notifications_.end();
 }
 
 bool NotificationList::HasNotificationOfType(const std::string& id,
                                              const NotificationType type) {
   Notifications::iterator iter = GetNotification(id);
   if (iter == notifications_.end())
     return false;
 
@@ skipping 173 matching lines @@
     notification->set_shown_as_popup(message_center_visible_
                                      || quiet_mode_
                                      || notification->shown_as_popup());
   }
   // Take ownership. The notification can only be removed from the list
   // in EraseNotification(), which will delete it.
   notifications_.insert(notification.release());
 }
 
 }  // namespace message_center