Add support for MediaPermissionDispatcher to use other permission types.

media/base/media_permission.h

 // Copyright 2015 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 MEDIA_BASE_MEDIA_PERMISSION_H_
 #define MEDIA_BASE_MEDIA_PERMISSION_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "media/base/media_export.h"
 
 class GURL;
 
 namespace media {
 
 // Interface to handle media related permission checks and requests.
 class MEDIA_EXPORT MediaPermission {
  public:
   typedef base::Callback<void(bool)> PermissionStatusCB;
 
   enum Type {
     PROTECTED_MEDIA_IDENTIFIER,
+    AUDIO_CAPTURE,
+    VIDEO_CAPTURE,
   };
 
   MediaPermission();
   virtual ~MediaPermission();
 
   // Checks whether |type| is permitted for |security_origion| without
   // triggering user interaction (e.g. permission prompt). The status will be
   // |false| if the permission has never been set.
   virtual void HasPermission(
       Type type,
       const GURL& security_origin,
       const PermissionStatusCB& permission_status_cb) = 0;
 
   // Requests |type| permission for |security_origion|. This may trigger user
   // interaction (e.g. permission prompt) if the permission has never been set.
   virtual void RequestPermission(
       Type type,
       const GURL& security_origin,
       const PermissionStatusCB& permission_status_cb) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MediaPermission);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_MEDIA_PERMISSION_H_