Fix stats hud in AppRTC Demo for iOS.

webrtc/examples/objc/AppRTCDemo/ARDStatsBuilder.m

Index: webrtc/examples/objc/AppRTCDemo/ARDStatsBuilder.m
diff --git a/webrtc/examples/objc/AppRTCDemo/ARDStatsBuilder.m b/webrtc/examples/objc/AppRTCDemo/ARDStatsBuilder.m
index 1f4ada6237de68c33b7102d2d37079369c273d28..2c6e1f525726c2fb9543d6a8b2bcfbb6a583e7f3 100644
--- a/webrtc/examples/objc/AppRTCDemo/ARDStatsBuilder.m
+++ b/webrtc/examples/objc/AppRTCDemo/ARDStatsBuilder.m
@@ -196,11 +196,10 @@
 
 - (void)parseSendSsrcStatsReport:(RTCStatsReport *)statsReport {
   NSDictionary *values = statsReport.values;
-  NSString *trackId = values[@"googTrackId"];
-  if (trackId.length && [trackId hasPrefix:@"ARDAMSv0"]) {
+  if ([values objectForKey:@"googFrameRateSent"]) {
     // Video track.
     [self parseVideoSendStatsReport:statsReport];
-  } else {
+  } else if ([values objectForKey:@"audioInputLevel"]) {
     // Audio track.
     [self parseAudioSendStatsReport:statsReport];
   }
@@ -250,7 +249,7 @@
   NSDictionary *values = statsReport.values;
   if (values[@"googFrameWidthReceived"]) {

[pbos-webrtc, 2016/06/03 10:05:24]

Do objectForKey here as well.

[stefan-webrtc, 2016/06/03 11:24:54]

Done.

     [self parseVideoRecvStatsReport:statsReport];

[pbos-webrtc, 2016/06/03 10:05:24]

Add // Video track. and Audio below to unify with parseSendSsrcStatsReport

[stefan-webrtc, 2016/06/03 11:24:54]

Done.

-  } else {
+  } else if ([values objectForKey:@"audioOutputLevel"]) {
     [self parseAudioRecvStatsReport:statsReport];
   }
 }