Remove RED/RTX workaround from sender/receiver and VideoEngine2.

webrtc/video/video_send_stream_tests.cc

Index: webrtc/video/video_send_stream_tests.cc
diff --git a/webrtc/video/video_send_stream_tests.cc b/webrtc/video/video_send_stream_tests.cc
index 2b5c6e690976d8a4472ec0c00819ba6f9444543d..088bdf50046746ed16599f241eed26b24a976946 100644
--- a/webrtc/video/video_send_stream_tests.cc
+++ b/webrtc/video/video_send_stream_tests.cc
@@ -518,18 +518,18 @@ TEST_F(VideoSendStreamTest, DoesNotUtilizeUlpfecForH264WithNackEnabled) {
 }
 
 // Without retransmissions FEC for H264 is fine.
-TEST_F(VideoSendStreamTest, DoesUtilizeRedForH264WithoutNackEnabled) {
+TEST_F(VideoSendStreamTest, DoesUtilizeUlpfecForH264WithoutNackEnabled) {
   UlpfecObserver test(false, false, true, true, "H264");
   RunBaseTest(&test);
 }
 
-TEST_F(VideoSendStreamTest, DoesUtilizeRedForVp8WithNackEnabled) {
+TEST_F(VideoSendStreamTest, DoesUtilizeUlpfecForVp8WithNackEnabled) {
   UlpfecObserver test(false, true, true, true, "VP8");
   RunBaseTest(&test);
 }
 
 #if !defined(RTC_DISABLE_VP9)
-TEST_F(VideoSendStreamTest, DoesUtilizeRedForVp9WithNackEnabled) {
+TEST_F(VideoSendStreamTest, DoesUtilizeUlpfecForVp9WithNackEnabled) {
   UlpfecObserver test(false, true, true, true, "VP9");
   RunBaseTest(&test);
 }