Use new RTCCameraVideoCapturer in AppRTCMobile.

webrtc/examples/objc/AppRTCMobile/ARDAppClient.m

Index: webrtc/examples/objc/AppRTCMobile/ARDAppClient.m
diff --git a/webrtc/examples/objc/AppRTCMobile/ARDAppClient.m b/webrtc/examples/objc/AppRTCMobile/ARDAppClient.m
index ef38138319ac56b2e9655eaec5cedef932cbd2f7..50d9f3d4b596c89c1c8a85a9db26a632d2d426cc 100644
--- a/webrtc/examples/objc/AppRTCMobile/ARDAppClient.m
+++ b/webrtc/examples/objc/AppRTCMobile/ARDAppClient.m
@@ -12,6 +12,7 @@
 
 #import "WebRTC/RTCAVFoundationVideoSource.h"
 #import "WebRTC/RTCAudioTrack.h"
+#import "WebRTC/RTCCameraVideoCapturer.h"
 #import "WebRTC/RTCConfiguration.h"
 #import "WebRTC/RTCFileLogger.h"
 #import "WebRTC/RTCIceServer.h"
@@ -21,6 +22,7 @@
 #import "WebRTC/RTCPeerConnectionFactory.h"
 #import "WebRTC/RTCRtpSender.h"
 #import "WebRTC/RTCTracing.h"
+#import "WebRTC/RTCVideoTrack.h"
 
 #import "ARDAppEngineClient.h"
 #import "ARDJoinResponse.h"
@@ -100,6 +102,8 @@ static int const kKbpsMultiplier = 1000;
   RTCFileLogger *_fileLogger;
   ARDTimerProxy *_statsTimer;
   ARDSettingsModel *_settings;
+  RTCCameraVideoCapturer *_capturer;
+  RTCVideoTrack *_localVideoTrack;
 }
 
 @synthesize shouldGetStats = _shouldGetStats;
@@ -300,11 +304,16 @@ static int const kKbpsMultiplier = 1000;
     // Disconnect from collider.
     _channel = nil;
   }
+  if (_capturer) {
+    [_capturer stopCapture];
+    _capturer = nil;
+  }
   _clientId = nil;
   _roomId = nil;
   _isInitiator = NO;
   _hasReceivedSdp = NO;
   _messageQueue = [NSMutableArray array];
+  _localVideoTrack = nil;
 #if defined(WEBRTC_IOS)
   [_factory stopAecDump];
   [_peerConnection stopRtcEventLog];
@@ -666,10 +675,10 @@ static int const kKbpsMultiplier = 1000;
   RTCRtpSender *sender =
       [_peerConnection senderWithKind:kRTCMediaStreamTrackKindVideo
                              streamId:kARDMediaStreamId];
-  RTCVideoTrack *track = [self createLocalVideoTrack];
-  if (track) {
-    sender.track = track;
-    [_delegate appClient:self didReceiveLocalVideoTrack:track];
+  _localVideoTrack = [self createLocalVideoTrack];
+  if (_localVideoTrack) {
+    sender.track = _localVideoTrack;
+    [_delegate appClient:self didReceiveLocalVideoTrack:_localVideoTrack];
   }
 
   return sender;
@@ -716,10 +725,9 @@ static int const kKbpsMultiplier = 1000;
   // trying to open a local stream.
 #if !TARGET_IPHONE_SIMULATOR
   if (!_isAudioOnly) {
-    RTCMediaConstraints *cameraConstraints =
-        [self cameraConstraints];
-    RTCAVFoundationVideoSource *source =
-        [_factory avFoundationVideoSourceWithConstraints:cameraConstraints];
+    RTCVideoSource *source = [_factory videoSource];
+    _capturer = [[RTCCameraVideoCapturer alloc] initWithDelegate:source];
+    [_delegate appClient:self didCreateLocalCapturer:_capturer];
     localVideoTrack =
         [_factory videoTrackWithSource:source
                                trackId:kARDVideoTrackId];
@@ -764,13 +772,6 @@ static int const kKbpsMultiplier = 1000;
    return constraints;
 }
 
-- (RTCMediaConstraints *)cameraConstraints {
-  RTCMediaConstraints *cameraConstraints = [[RTCMediaConstraints alloc]
-      initWithMandatoryConstraints:nil
-               optionalConstraints:[_settings currentMediaConstraintFromStoreAsRTCDictionary]];
-  return cameraConstraints;
-}
-
 - (RTCMediaConstraints *)defaultAnswerConstraints {
   return [self defaultOfferConstraints];
 }