Add testRunner.cancelAllActiveNotifications to close all active notifications.

Source/testing/runner/NotificationPresenter.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 72 matching lines @@
     string id(title.utf8());
     if (m_activeNotifications.find(id) == m_activeNotifications.end())
         return false;
 
     const WebNotification& notification = m_activeNotifications.find(id)->second;
     WebNotification eventTarget(notification);
     eventTarget.dispatchClickEvent();
     return true;
 }
 
+void NotificationPresenter::cancelAllActiveNotifications()
+{
+    while (!m_activeNotifications.empty()) {
+        const WebNotification& notification = m_activeNotifications.begin()->second;
+        cancel(notification);
+    }
+}
+
 // The output from all these methods matches what DumpRenderTree produces.
 bool NotificationPresenter::show(const WebNotification& notification)
 {
     WebString identifier = identifierForNotification(notification);
     if (!notification.replaceId().isEmpty()) {
         string replaceId(notification.replaceId().utf8());
         if (m_replacements.find(replaceId) != m_replacements.end())
             m_delegate->printMessage(string("REPLACING NOTIFICATION ") + m_replacements.find(replaceId)->second + "\n");
 
         m_replacements[replaceId] = identifier.utf8();
@@ skipping 51 matching lines @@
     const WebSecurityOrigin& origin,
     WebNotificationPermissionCallback* callback)
 {
     m_delegate->printMessage("DESKTOP NOTIFICATION PERMISSION REQUESTED: " + string(origin.toString().utf8()) + "\n");
     callback->permissionRequestComplete();
 }
 
 }
 
 #endif // ENABLE_NOTIFICATIONS