iOS: Add new RTCVideoSource interface

webrtc/sdk/objc/Framework/Classes/RTCPeerConnectionFactory.mm

Index: webrtc/sdk/objc/Framework/Classes/RTCPeerConnectionFactory.mm
diff --git a/webrtc/sdk/objc/Framework/Classes/RTCPeerConnectionFactory.mm b/webrtc/sdk/objc/Framework/Classes/RTCPeerConnectionFactory.mm
index 4f542a9fcc6e519e8c1eb945eab2e2ec6376ba4f..9759269357c961377c2a9838485babb3a4e0e181 100644
--- a/webrtc/sdk/objc/Framework/Classes/RTCPeerConnectionFactory.mm
+++ b/webrtc/sdk/objc/Framework/Classes/RTCPeerConnectionFactory.mm
@@ -21,6 +21,7 @@
 #import "RTCVideoTrack+Private.h"
 #import "WebRTC/RTCLogging.h"
 
+#include "objcvideotracksource.h"
 #include "videotoolboxvideocodecfactory.h"
 
 @implementation RTCPeerConnectionFactory {
@@ -87,6 +88,12 @@
                                                  constraints:constraints];
 }
 
+- (RTCVideoSource *)videoSource {
+  rtc::scoped_refptr<webrtc::ObjcVideoTrackSource> objc_video_track_source(

[tkchin_webrtc, 2017/04/06 18:01:51]

ObjC naming in ObjC methods, so camel case

[magjed_webrtc, 2017/04/10 12:12:50]

Done.

+      new rtc::RefCountedObject<webrtc::ObjcVideoTrackSource>());
+  return [[RTCVideoSource alloc] initWithNativeVideoSource:objc_video_track_source];
+}
+
 - (RTCVideoTrack *)videoTrackWithSource:(RTCVideoSource *)source
                                 trackId:(NSString *)trackId {
   return [[RTCVideoTrack alloc] initWithFactory:self