Update Unit test for AppRTCMobile app

webrtc/examples/objc/AppRTCDemo/ARDAppClient.m

Index: webrtc/examples/objc/AppRTCDemo/ARDAppClient.m
diff --git a/webrtc/examples/objc/AppRTCDemo/ARDAppClient.m b/webrtc/examples/objc/AppRTCDemo/ARDAppClient.m
index 88431c6562d18682891377aef9d34f628965cb78..a720d02df134bfe66cf5d9fcf7cba306cbde639b 100644
--- a/webrtc/examples/objc/AppRTCDemo/ARDAppClient.m
+++ b/webrtc/examples/objc/AppRTCDemo/ARDAppClient.m
@@ -10,8 +10,9 @@
 
 #import "ARDAppClient+Internal.h"
 
-#if defined(WEBRTC_IOS)
 #import "WebRTC/RTCAVFoundationVideoSource.h"
+#if defined(WEBRTC_IOS)
+#import "WebRTC/RTCTracing.h"
 #endif
 #import "WebRTC/RTCAudioTrack.h"
 #import "WebRTC/RTCConfiguration.h"
@@ -679,7 +680,7 @@ - (RTCVideoTrack *)createLocalVideoTrack {
   // trying to open a local stream.
   // TODO(tkchin): local video capture for OSX. See
   // https://code.google.com/p/webrtc/issues/detail?id=3417.
-#if !TARGET_IPHONE_SIMULATOR && TARGET_OS_IPHONE
+#if !TARGET_IPHONE_SIMULATOR
   if (!_isAudioOnly) {
     RTCMediaConstraints *mediaConstraints =
         [self defaultMediaStreamConstraints];