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

webrtc/examples/objc/AppRTCDemo/ARDAppClient.h

Index: webrtc/examples/objc/AppRTCDemo/ARDAppClient.h
diff --git a/webrtc/examples/objc/AppRTCDemo/ARDAppClient.h b/webrtc/examples/objc/AppRTCDemo/ARDAppClient.h
index 0745c16a4c58bc3e79dea9b31b7356d809d86c9d..1ffcf1c747c82baa8aa2de2b6009e83c0ab47e5c 100644
--- a/webrtc/examples/objc/AppRTCDemo/ARDAppClient.h
+++ b/webrtc/examples/objc/AppRTCDemo/ARDAppClient.h
@@ -10,7 +10,8 @@
 
 #import <Foundation/Foundation.h>
 
-#import "RTCVideoTrack.h"
+#import "webrtc/api/objc/RTCPeerConnection.h"
+#import "webrtc/api/objc/RTCVideoTrack.h"

[hjon_webrtc, 2016/02/12 17:34:56]

Should all of these paths be absolute? That seemed to be what we did for the
updated API, but I'm not sure if the same style should be used here. From the
current libjingle_peerconnection_objc, it looked like I could also export a
setting for include directories, but I'm not sure which style to use?

 
 typedef NS_ENUM(NSInteger, ARDAppClientState) {
   // Disconnected from servers.
@@ -30,7 +31,7 @@ typedef NS_ENUM(NSInteger, ARDAppClientState) {
     didChangeState:(ARDAppClientState)state;
 
 - (void)appClient:(ARDAppClient *)client
-    didChangeConnectionState:(RTCICEConnectionState)state;
+    didChangeConnectionState:(RTCIceConnectionState)state;
 
 - (void)appClient:(ARDAppClient *)client
     didReceiveLocalVideoTrack:(RTCVideoTrack *)localVideoTrack;