Adding AecDump functionality to AppRTCDemo for iOS

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 b7f75462671a0345747c5e5bb5afc74cb1d2b72b..c3480a2d954e3b97d889c46c52d2bbb0196af83a 100644
--- a/webrtc/examples/objc/AppRTCDemo/ARDAppClient.h
+++ b/webrtc/examples/objc/AppRTCDemo/ARDAppClient.h
@@ -64,9 +64,11 @@ typedef NS_ENUM(NSInteger, ARDAppClientState) {
 // Establishes a connection with the AppRTC servers for the given room id.
 // If |isLoopback| is true, the call will connect to itself.
 // If |isAudioOnly| is true, video will be disabled for the call.
+// If |makeAecDump| is true, an aecdump will be created for the call.

[tkchin_webrtc, 2016/08/19 17:31:42]

nit: shouldMakeAecDump (avoid verbs in argument names)
here and elsewhere

[peah-webrtc, 2016/08/23 11:45:15]

Done.

 - (void)connectToRoomWithId:(NSString *)roomId
                  isLoopback:(BOOL)isLoopback
-                isAudioOnly:(BOOL)isAudioOnly;
+                isAudioOnly:(BOOL)isAudioOnly
+                makeAecDump:(BOOL)makeAecDump;
 
 // Disconnects from the AppRTC servers and any connected clients.
 - (void)disconnect;