Implement FrameMarking header extension support

webrtc/modules/rtp_rtcp/source/rtp_utility.cc

Index: webrtc/modules/rtp_rtcp/source/rtp_utility.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_utility.cc b/webrtc/modules/rtp_rtcp/source/rtp_utility.cc
index 06786cb27afdb5b878645ad637c7d43d7af90bae..6f0f948aa3e191a867cae71abe64ac3555e21cca 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_utility.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_utility.cc
@@ -253,6 +253,9 @@ bool RtpHeaderParser::Parse(RTPHeader* header,
   header->extension.hasVideoContentType = false;
   header->extension.videoContentType = VideoContentType::UNSPECIFIED;
 
+  // May not be present in packet.
+  header->extension.hasFrameMarks = false;
+
   if (X) {
     /* RTP header extension, RFC 3550.
      0                   1                   2                   3
@@ -473,6 +476,15 @@ void RtpHeaderParser::ParseOneByteExtensionHeader(
               rtc::MakeArrayView(ptr, len + 1));
           break;
         }
+        case kRtpExtensionFrameMarking: {
+          if (!FrameMarking::Parse(rtc::MakeArrayView(ptr, len + 1),
+                                   &header->extension.frame_marks)) {
+            LOG(LS_WARNING) << "Incorrect frame marking extension";
+            return;
+          }
+          header->extension.hasFrameMarks = true;
+          break;
+        }
         case kRtpExtensionNone:
         case kRtpExtensionNumberOfExtensions: {
           RTC_NOTREACHED() << "Invalid extension type: " << type;