Loopback mode for AppRTCDemo on iOS.

webrtc/examples/objc/AppRTCDemo/ARDAppClient.h

 /*
  *  Copyright 2014 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.
  */
 
@@ skipping 43 matching lines @@
 // the delegate.
 @property(nonatomic, assign) BOOL shouldGetStats;
 @property(nonatomic, readonly) ARDAppClientState state;
 @property(nonatomic, weak) id<ARDAppClientDelegate> delegate;
 
 // Convenience constructor since all expected use cases will need a delegate
 // in order to receive remote tracks.
 - (instancetype)initWithDelegate:(id<ARDAppClientDelegate>)delegate;
 
 // Establishes a connection with the AppRTC servers for the given room id.
-// TODO(tkchin): provide available keys/values for options. This will be used
-// for call configurations such as overriding server choice, specifying codecs
-// and so on.
+// If |isLoopback| is true, the call will connect to itself.
+// If |isAudioOnly| is true, video will be disabled for the call.
 - (void)connectToRoomWithId:(NSString *)roomId
-                    options:(NSDictionary *)options;
+                 isLoopback:(BOOL)isLoopback
+                isAudioOnly:(BOOL)isAudioOnly;
 
 // Disconnects from the AppRTC servers and any connected clients.
 - (void)disconnect;
 
 @end