Add FullStack test for simulcast screenshare mode.

webrtc/common_video/include/frame_callback.h

Index: webrtc/common_video/include/frame_callback.h
diff --git a/webrtc/common_video/include/frame_callback.h b/webrtc/common_video/include/frame_callback.h
index 45624f1554aab8e4d606f19ed72f2cb997f16224..0a2a905008d76f4b031b6aac4df802464196cbc0 100644
--- a/webrtc/common_video/include/frame_callback.h
+++ b/webrtc/common_video/include/frame_callback.h
@@ -26,27 +26,23 @@ struct EncodedFrame {
       : data_(nullptr),
         length_(0),
         frame_type_(kEmptyFrame),
-        encoded_width_(0),
-        encoded_height_(0),
+        stream_id_(0),
         timestamp_(0) {}
   EncodedFrame(const uint8_t* data,
                size_t length,
                FrameType frame_type,
-               uint32_t encoded_width,
-               uint32_t encoded_height,
+               size_t stream_id,
                uint32_t timestamp)
       : data_(data),
         length_(length),
         frame_type_(frame_type),
-        encoded_width_(encoded_width),
-        encoded_height_(encoded_height),
+        stream_id_(stream_id),
         timestamp_(timestamp) {}
 
   const uint8_t* data_;
   const size_t length_;
   const FrameType frame_type_;
-  const uint32_t encoded_width_;
-  const uint32_t encoded_height_;
+  const size_t stream_id_;
   const uint32_t timestamp_;
 };