add "always allow" option to the mediastream infobar and allow user to allow/not allow acces to devi

chrome/browser/ui/webui/options2/content_settings_handler2.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS2_CONTENT_SETTINGS_HANDLER2_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS2_CONTENT_SETTINGS_HANDLER2_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 74 matching lines @@
   void UpdateAllExceptionsViewsFromModel();
   // As above, but only OTR tables.
   void UpdateAllOTRExceptionsViewsFromModel();
   // Clobbers and rebuilds just the geolocation exception table.
   void UpdateGeolocationExceptionsView();
   // Clobbers and rebuilds just the desktop notification exception table.
   void UpdateNotificationExceptionsView();
   // Clobbers and rebuilds just the Pepper Flash camera and microphone exception
   // table.
   void UpdateFlashCameraMicExceptionsView();
+  // Clobbers and rebuilds just the Media Stream device exception table.
+  void UpdateMediaStreamExceptionsView();
   // Clobbers and rebuilds an exception table that's managed by the host content
   // settings map.
   void UpdateExceptionsViewFromHostContentSettingsMap(ContentSettingsType type);
   // As above, but acts on the OTR table for the content setting type.
   void UpdateExceptionsViewFromOTRHostContentSettingsMap(
       ContentSettingsType type);
   // Updates the radio buttons for enabling / disabling handlers.
   void UpdateHandlersEnabledRadios();
 
   // Callbacks used by the page ------------------------------------------------
@@ skipping 51 matching lines @@
 
   static const ExContentSettingsTypeNameEntry
       kExContentSettingsTypeGroupNames[];
 
   DISALLOW_COPY_AND_ASSIGN(ContentSettingsHandler);
 };
 
 }  // namespace options2
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS2_CONTENT_SETTINGS_HANDLER2_H_