Pass settings model to ARDAppClient instead of individual settings.

webrtc/examples/objc/AppRTCMobile/tests/ARDAppClient_xctest.mm

 /*
  *  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.
  */
 
 #import <Foundation/Foundation.h>
 #import <OCMock/OCMock.h>
 #import <QuartzCore/CoreAnimation.h>
 #import <XCTest/XCTest.h>
 
 #include "webrtc/base/ssladapter.h"
 
 #import "WebRTC/RTCMediaConstraints.h"
 #import "WebRTC/RTCPeerConnectionFactory.h"
 
 #import "ARDAppClient+Internal.h"
 #import "ARDJoinResponse+Internal.h"
 #import "ARDMessageResponse+Internal.h"
 #import "ARDSDPUtils.h"
+#import "ARDSettingsModel.h"
 
 @interface ARDAppClientTest : XCTestCase
 @end
 
 @implementation ARDAppClientTest
 
 #pragma mark - Mock helpers
 
 - (id)mockRoomServerClientForRoomId:(NSString *)roomId
                            clientId:(NSString *)clientId
@@ skipping 167 matching lines @@
   }];
   // TODO(tkchin): Figure out why DTLS-SRTP constraint causes thread assertion
   // crash in Debug.
   answerer.defaultPeerConnectionConstraints =
       [[RTCMediaConstraints alloc] initWithMandatoryConstraints:nil
                                             optionalConstraints:nil];
   weakAnswerer = answerer;
 
   // Kick off connection.
   [caller connectToRoomWithId:roomId
+                     settings:[[ARDSettingsModel alloc] init]
                    isLoopback:NO
                   isAudioOnly:NO
             shouldMakeAecDump:NO
         shouldUseLevelControl:NO];
   [answerer connectToRoomWithId:roomId
+                       settings:[[ARDSettingsModel alloc] init]
                      isLoopback:NO
                     isAudioOnly:NO
               shouldMakeAecDump:NO
           shouldUseLevelControl:NO];
   [self waitForExpectationsWithTimeout:20 handler:^(NSError *error) {
     if (error) {
       XCTFail(@"Expectation failed with error %@.", error);
     }
   }];
 }
@@ skipping 16 matching lines @@
                                  messages:[NSArray array]
                            messageHandler:^(ARDSignalingMessage *message) {}
                          connectedHandler:^{}
                    localVideoTrackHandler:^{ [localVideoTrackExpectation fulfill]; }];
   caller.defaultPeerConnectionConstraints =
       [[RTCMediaConstraints alloc] initWithMandatoryConstraints:nil
                                           optionalConstraints:nil];
 
   // Kick off connection.
   [caller connectToRoomWithId:roomId
+                     settings:[[ARDSettingsModel alloc] init]
                    isLoopback:NO
                   isAudioOnly:NO
             shouldMakeAecDump:NO
         shouldUseLevelControl:NO];
   [self waitForExpectationsWithTimeout:20 handler:^(NSError *error) {
     if (error) {
       XCTFail("Expectation timed out with error: %@.", error);
     }
   }];
 }
 #endif
 
 @end