Add ParsedPayload::video_header() accessor.

Preparation CL to remove RTPTypeHeader.

Bug: none
Change-Id: I695acf20082b94744a2f6c7692f1b2128932cd79
Reviewed-on: https://webrtc-review.googlesource.com/86132
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23835}
diff --git a/modules/video_coding/jitter_buffer_unittest.cc b/modules/video_coding/jitter_buffer_unittest.cc
index 71c17ea..45b2c2d 100644
--- a/modules/video_coding/jitter_buffer_unittest.cc
+++ b/modules/video_coding/jitter_buffer_unittest.cc
@@ -242,7 +242,7 @@
     rtpHeader.header.timestamp = timestamp_;
     rtpHeader.header.markerBit = true;
     rtpHeader.frameType = kVideoFrameDelta;
-    rtpHeader.type.Video.codec = kVideoCodecUnknown;
+    rtpHeader.video_header().codec = kVideoCodecUnknown;
     packet_.reset(new VCMPacket(data_, size_, rtpHeader));
   }
 
@@ -800,7 +800,7 @@
   rtpHeader.header.sequenceNumber = seq_num_ + 2;
   rtpHeader.header.timestamp = timestamp_ + (33 * 90);
   rtpHeader.header.markerBit = false;
-  rtpHeader.type.Video.codec = kVideoCodecUnknown;
+  rtpHeader.video_header().codec = kVideoCodecUnknown;
   VCMPacket empty_packet(data_, 0, rtpHeader);
   EXPECT_EQ(kOldPacket,
             jitter_buffer_->InsertPacket(empty_packet, &retransmitted));
@@ -2164,7 +2164,7 @@
   timestamp_ += 33 * 90;
   WebRtcRTPHeader rtpHeader;
   memset(&rtpHeader, 0, sizeof(rtpHeader));
-  rtpHeader.type.Video.codec = kVideoCodecUnknown;
+  rtpHeader.video_header().codec = kVideoCodecUnknown;
   VCMPacket emptypacket(data_, 0, rtpHeader);
   emptypacket.seqNum = seq_num_;
   emptypacket.timestamp = timestamp_;
diff --git a/modules/video_coding/packet.cc b/modules/video_coding/packet.cc
index 7db566a..e4e1ca4 100644
--- a/modules/video_coding/packet.cc
+++ b/modules/video_coding/packet.cc
@@ -50,20 +50,21 @@
       timesNacked(-1),
       frameType(rtpHeader.frameType),
       codec(kVideoCodecUnknown),
-      is_first_packet_in_frame(rtpHeader.type.Video.is_first_packet_in_frame),
+      is_first_packet_in_frame(
+          rtpHeader.video_header().is_first_packet_in_frame),
       completeNALU(kNaluComplete),
       insertStartCode(false),
-      width(rtpHeader.type.Video.width),
-      height(rtpHeader.type.Video.height),
-      video_header(rtpHeader.type.Video) {
-  CopyCodecSpecifics(rtpHeader.type.Video);
+      width(rtpHeader.video_header().width),
+      height(rtpHeader.video_header().height),
+      video_header(rtpHeader.video_header()) {
+  CopyCodecSpecifics(rtpHeader.video_header());
 
   if (markerBit) {
-    video_header.rotation = rtpHeader.type.Video.rotation;
+    video_header.rotation = rtpHeader.video_header().rotation;
   }
   // Playout decisions are made entirely based on first packet in a frame.
   if (is_first_packet_in_frame) {
-    video_header.playout_delay = rtpHeader.type.Video.playout_delay;
+    video_header.playout_delay = rtpHeader.video_header().playout_delay;
   } else {
     video_header.playout_delay = {-1, -1};
   }
diff --git a/modules/video_coding/video_receiver_unittest.cc b/modules/video_coding/video_receiver_unittest.cc
index 2855f7a..a95b150 100644
--- a/modules/video_coding/video_receiver_unittest.cc
+++ b/modules/video_coding/video_receiver_unittest.cc
@@ -106,7 +106,7 @@
   header.header.payloadType = kUnusedPayloadType;
   header.header.ssrc = 1;
   header.header.headerLength = 12;
-  header.type.Video.codec = kVideoCodecVP8;
+  header.video_header().codec = kVideoCodecVP8;
   for (int i = 0; i < 10; ++i) {
     EXPECT_CALL(packet_request_callback_, ResendPackets(_, _)).Times(0);
     InsertAndVerifyPaddingFrame(payload, &header);
@@ -130,17 +130,17 @@
   header.header.payloadType = kUnusedPayloadType;
   header.header.ssrc = 1;
   header.header.headerLength = 12;
-  header.type.Video.codec = kVideoCodecVP8;
+  header.video_header().codec = kVideoCodecVP8;
   // Insert one video frame to get one frame decoded.
   header.frameType = kVideoFrameKey;
-  header.type.Video.is_first_packet_in_frame = true;
+  header.video_header().is_first_packet_in_frame = true;
   header.header.markerBit = true;
   InsertAndVerifyDecodableFrame(payload, kFrameSize, &header);
   clock_.AdvanceTimeMilliseconds(33);
   header.header.timestamp += 3000;
 
   header.frameType = kEmptyFrame;
-  header.type.Video.is_first_packet_in_frame = false;
+  header.video_header().is_first_packet_in_frame = false;
   header.header.markerBit = false;
   // Insert padding frames.
   for (int i = 0; i < 10; ++i) {
@@ -176,15 +176,15 @@
   WebRtcRTPHeader header;
   memset(&header, 0, sizeof(header));
   header.frameType = kEmptyFrame;
-  header.type.Video.is_first_packet_in_frame = false;
+  header.video_header().is_first_packet_in_frame = false;
   header.header.markerBit = false;
   header.header.paddingLength = kPaddingSize;
   header.header.payloadType = kUnusedPayloadType;
   header.header.ssrc = 1;
   header.header.headerLength = 12;
-  header.type.Video.codec = kVideoCodecVP8;
-  header.type.Video.codecHeader.VP8.pictureId = -1;
-  header.type.Video.codecHeader.VP8.tl0PicIdx = -1;
+  header.video_header().codec = kVideoCodecVP8;
+  header.video_header().codecHeader.VP8.pictureId = -1;
+  header.video_header().codecHeader.VP8.tl0PicIdx = -1;
   for (int i = 0; i < 3; ++i) {
     // Insert 2 video frames.
     for (int j = 0; j < 2; ++j) {
@@ -192,7 +192,7 @@
         header.frameType = kVideoFrameKey;
       else
         header.frameType = kVideoFrameDelta;
-      header.type.Video.is_first_packet_in_frame = true;
+      header.video_header().is_first_packet_in_frame = true;
       header.header.markerBit = true;
       InsertAndVerifyDecodableFrame(payload, kFrameSize, &header);
       clock_.AdvanceTimeMilliseconds(33);
@@ -201,7 +201,7 @@
 
     // Insert 2 padding only frames.
     header.frameType = kEmptyFrame;
-    header.type.Video.is_first_packet_in_frame = false;
+    header.video_header().is_first_packet_in_frame = false;
     header.header.markerBit = false;
     for (int j = 0; j < 2; ++j) {
       // InsertAndVerifyPaddingFrame(payload, &header);