Rename media constraints model and store.

webrtc/examples/objc/AppRTCMobile/ios/ARDSettingsViewController.h

 /*
  *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #import <UIKit/UIKit.h>
 
-@class ARDMediaConstraintsModel;
+@class ARDSettingsModel;
 
 NS_ASSUME_NONNULL_BEGIN
 /**
  * Displays settings options.
  */
 @interface ARDSettingsViewController : UITableViewController
 
 /**
  * Creates new instance.
  *
  * @param style the table view style that should be used
- * @param mediaConstraintsModel model class for the media constraints settings.
+ * @param settingsModel model class for the user settings.
  */
 - (instancetype)initWithStyle:(UITableViewStyle)style
-        mediaConstraintsModel:(ARDMediaConstraintsModel *)mediaConstraintsModel;
+                settingsModel:(ARDSettingsModel *)settingsModel;
 
 #pragma mark - Unavailable
 
 - (instancetype)initWithStyle:(UITableViewStyle)style NS_UNAVAILABLE;
 - (instancetype)init NS_UNAVAILABLE;
 + (instancetype) new NS_UNAVAILABLE;
 
 @end
 NS_ASSUME_NONNULL_END