Update iOS AppRTCDemo to use the updated Objective-C API.

webrtc/examples/objc/AppRTCDemo/ios/ARDVideoCallViewController.m

 /*
  *  Copyright 2015 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 "ARDVideoCallViewController.h"
 
 #import "webrtc/base/objc/RTCDispatcher.h"
 #import "webrtc/modules/audio_device/ios/objc/RTCAudioSession.h"
 
-#import "RTCAVFoundationVideoSource.h"
-#import "RTCLogging.h"
+#import "webrtc/api/objc/RTCAVFoundationVideoSource.h"
+#import "webrtc/base/objc/RTCLogging.h"
 
 #import "ARDAppClient.h"
 #import "ARDVideoCallView.h"
 
 @interface ARDVideoCallViewController () <ARDAppClientDelegate,
     ARDVideoCallViewDelegate>
 @property(nonatomic, strong) RTCVideoTrack *localVideoTrack;
 @property(nonatomic, strong) RTCVideoTrack *remoteVideoTrack;
 @property(nonatomic, readonly) ARDVideoCallView *videoCallView;
 @end
@@ skipping 16 matching lines @@
                       isLoopback:isLoopback
                      isAudioOnly:isAudioOnly];
   }
   return self;
 }
 
 - (void)loadView {
   _videoCallView = [[ARDVideoCallView alloc] initWithFrame:CGRectZero];
   _videoCallView.delegate = self;
   _videoCallView.statusLabel.text =
-      [self statusTextForState:RTCICEConnectionNew];
+      [self statusTextForState:RTCIceConnectionStateNew];
   self.view = _videoCallView;
 }
 
 #pragma mark - ARDAppClientDelegate
 
 - (void)appClient:(ARDAppClient *)client
     didChangeState:(ARDAppClientState)state {
   switch (state) {
     case kARDAppClientStateConnected:
       RTCLog(@"Client connected.");
       break;
     case kARDAppClientStateConnecting:
       RTCLog(@"Client connecting.");
       break;
     case kARDAppClientStateDisconnected:
       RTCLog(@"Client disconnected.");
       [self hangup];
       break;
   }
 }
 
 - (void)appClient:(ARDAppClient *)client
-    didChangeConnectionState:(RTCICEConnectionState)state {
-  RTCLog(@"ICE state changed: %d", state);
+    didChangeConnectionState:(RTCIceConnectionState)state {
+  RTCLog(@"ICE state changed: %ld", (long)state);
   __weak ARDVideoCallViewController *weakSelf = self;
   dispatch_async(dispatch_get_main_queue(), ^{
     ARDVideoCallViewController *strongSelf = weakSelf;
     strongSelf.videoCallView.statusLabel.text =
         [strongSelf statusTextForState:state];
   });
 }
 
 - (void)appClient:(ARDAppClient *)client
     didReceiveLocalVideoTrack:(RTCVideoTrack *)localVideoTrack {
@@ skipping 97 matching lines @@
 - (void)switchCamera {
   RTCVideoSource* source = self.localVideoTrack.source;
   if ([source isKindOfClass:[RTCAVFoundationVideoSource class]]) {
     RTCAVFoundationVideoSource* avSource = (RTCAVFoundationVideoSource*)source;
     avSource.useBackCamera = !avSource.useBackCamera;
     _videoCallView.localVideoView.transform = avSource.useBackCamera ?
         CGAffineTransformIdentity : CGAffineTransformMakeScale(-1, 1);
   }
 }
 
-- (NSString *)statusTextForState:(RTCICEConnectionState)state {
+- (NSString *)statusTextForState:(RTCIceConnectionState)state {
   switch (state) {
-    case RTCICEConnectionNew:
-    case RTCICEConnectionChecking:
+    case RTCIceConnectionStateNew:
+    case RTCIceConnectionStateChecking:
       return @"Connecting...";
-    case RTCICEConnectionConnected:
-    case RTCICEConnectionCompleted:
-    case RTCICEConnectionFailed:
-    case RTCICEConnectionDisconnected:
-    case RTCICEConnectionClosed:
-    case RTCICEConnectionMax:
+    case RTCIceConnectionStateConnected:
+    case RTCIceConnectionStateCompleted:
+    case RTCIceConnectionStateFailed:
+    case RTCIceConnectionStateDisconnected:
+    case RTCIceConnectionStateClosed:
+    case RTCIceConnectionStateMax:
       return nil;
   }
 }
 
 - (void)showAlertWithMessage:(NSString*)message {
   UIAlertView* alertView = [[UIAlertView alloc] initWithTitle:nil
                                                       message:message
                                                      delegate:nil
                                             cancelButtonTitle:@"OK"
                                             otherButtonTitles:nil];
   [alertView show];
 }
 
 @end