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

webrtc/examples/objc/AppRTCDemo/RTCICEServer+JSON.m

 /*
  *  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 "RTCICEServer+JSON.h"
+#import "RTCIceServer+JSON.h"
 
 static NSString const *kRTCICEServerUsernameKey = @"username";
 static NSString const *kRTCICEServerPasswordKey = @"password";
 static NSString const *kRTCICEServerUrisKey = @"uris";
 static NSString const *kRTCICEServerUrlKey = @"urls";
 static NSString const *kRTCICEServerCredentialKey = @"credential";
 
-@implementation RTCICEServer (JSON)
+@implementation RTCIceServer (JSON)
 
-+ (RTCICEServer *)serverFromJSONDictionary:(NSDictionary *)dictionary {
++ (RTCIceServer *)serverFromJSONDictionary:(NSDictionary *)dictionary {
   NSString *url = dictionary[kRTCICEServerUrlKey];
   NSString *username = dictionary[kRTCICEServerUsernameKey];
   NSString *credential = dictionary[kRTCICEServerCredentialKey];
   username = username ? username : @"";
   credential = credential ? credential : @"";
-  return [[RTCICEServer alloc] initWithURI:[NSURL URLWithString:url]
-                                  username:username
-                                  password:credential];
+  return [[RTCIceServer alloc] initWithURLStrings:@[url]
+                                         username:username
+                                       credential:credential];
 }
 
-+ (NSArray *)serversFromCEODJSONDictionary:(NSDictionary *)dictionary {
++ (RTCIceServer *)serverFromCEODJSONDictionary:(NSDictionary *)dictionary {
   NSString *username = dictionary[kRTCICEServerUsernameKey];
   NSString *password = dictionary[kRTCICEServerPasswordKey];
   NSArray *uris = dictionary[kRTCICEServerUrisKey];
-  NSMutableArray *servers = [NSMutableArray arrayWithCapacity:uris.count];
-  for (NSString *uri in uris) {
-    RTCICEServer *server =
-        [[RTCICEServer alloc] initWithURI:[NSURL URLWithString:uri]
-                                 username:username
-                                 password:password];
-    [servers addObject:server];
-  }
-  return servers;
+  RTCIceServer *server =
+      [[RTCIceServer alloc] initWithURLStrings:uris
+                                      username:username
+                                    credential:password];
+  return server;
 }
 
 @end