Add new video codec factories

webrtc/media/engine/webrtcvideoengine.h

Index: webrtc/media/engine/webrtcvideoengine.h
diff --git a/webrtc/media/engine/webrtcvideoengine.h b/webrtc/media/engine/webrtcvideoengine.h
index f53105e959aab54f47f3146f47154edd1a9b46f8..8249eb2d92855c530543c54ee990dccc70ccf8c8 100644
--- a/webrtc/media/engine/webrtcvideoengine.h
+++ b/webrtc/media/engine/webrtcvideoengine.h
@@ -37,7 +37,9 @@
 
 namespace webrtc {
 class VideoDecoder;
+class VideoDecoderFactory;
 class VideoEncoder;
+class VideoEncoderFactory;
 struct MediaConfig;
 }
 
@@ -101,6 +103,13 @@ class WebRtcVideoEngine {
   // video factories are separate from the internal software codecs.
   WebRtcVideoEngine(WebRtcVideoEncoderFactory* external_video_encoder_factory,
                     WebRtcVideoDecoderFactory* external_video_decoder_factory);
+
+  // These video codec factories represents all video codecs, i.e. both software
+  // and external hardware codecs.
+  WebRtcVideoEngine(
+      std::unique_ptr<webrtc::VideoEncoderFactory> video_encoder_factory,
+      std::unique_ptr<webrtc::VideoDecoderFactory> video_decoder_factory);
+
   virtual ~WebRtcVideoEngine();
 
   WebRtcVideoChannel* CreateChannel(webrtc::Call* call,