Added VP8 simulcast tests. Fixed analyzer to correctly infer timestamps.

webrtc/video/video_send_stream.cc

Index: webrtc/video/video_send_stream.cc
diff --git a/webrtc/video/video_send_stream.cc b/webrtc/video/video_send_stream.cc
index bb67114ad0623f34d5e355a3da1361b7742ca0b9..08ffa3fb431d493b75d7cb3f905396ef7a28c826 100644
--- a/webrtc/video/video_send_stream.cc
+++ b/webrtc/video/video_send_stream.cc
@@ -1032,7 +1032,8 @@ EncodedImageCallback::Result VideoSendStreamImpl::OnEncodedImage(
   if (config_->post_encode_callback) {
     config_->post_encode_callback->EncodedFrameCallback(
         EncodedFrame(encoded_image._buffer, encoded_image._length,
-                     encoded_image._frameType));
+                     encoded_image._frameType, encoded_image._encodedWidth,
+                     encoded_image._encodedHeight, encoded_image._timeStamp));
   }
   {
     rtc::CritScope lock(&encoder_activity_crit_sect_);