Pass settings model to ARDAppClient instead of individual settings.

webrtc/examples/objc/AppRTCMobile/ARDAppClient.h

Index: webrtc/examples/objc/AppRTCMobile/ARDAppClient.h
diff --git a/webrtc/examples/objc/AppRTCMobile/ARDAppClient.h b/webrtc/examples/objc/AppRTCMobile/ARDAppClient.h
index 0feb01586aab2a0760267f591c3012d6a477886b..eed643866cabed8d42a913480533f8bf9b3ad1c1 100644
--- a/webrtc/examples/objc/AppRTCMobile/ARDAppClient.h
+++ b/webrtc/examples/objc/AppRTCMobile/ARDAppClient.h
@@ -13,6 +13,8 @@
 #import "WebRTC/RTCPeerConnection.h"
 #import "WebRTC/RTCVideoTrack.h"
 
+#import "ARDSettingsModel.h"
+
 typedef NS_ENUM(NSInteger, ARDAppClientState) {
   // Disconnected from servers.
   kARDAppClientStateDisconnected,
@@ -60,14 +62,7 @@ typedef NS_ENUM(NSInteger, ARDAppClientState) {
 @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
-                preferVideoCodec:(NSString*)codec;
-
-// Sets camera constraints.
-- (void)setCameraConstraints:(RTCMediaConstraints *)mediaConstraints;
-
-// Sets maximum bitrate the rtp sender should use.
-- (void)setMaxBitrate:(NSNumber *)maxBitrate;
+- (instancetype)initWithDelegate:(id<ARDAppClientDelegate>)delegate;
 
 // Establishes a connection with the AppRTC servers for the given room id.
 // If |isLoopback| is true, the call will connect to itself.
@@ -76,6 +71,7 @@ typedef NS_ENUM(NSInteger, ARDAppClientState) {
 // If |shouldUseLevelControl| is true, the level controller will be used
 // in the call.
 - (void)connectToRoomWithId:(NSString *)roomId
+              usingSettings:(ARDSettingsModel *)settings

[daniela-webrtc, 2017/03/26 15:49:48]

Nit: `using` is implied so you can remove the prefix. But up to you.

[sakal, 2017/03/27 13:34:23]

Done.

                  isLoopback:(BOOL)isLoopback
                 isAudioOnly:(BOOL)isAudioOnly
           shouldMakeAecDump:(BOOL)shouldMakeAecDump