Reland of Rename RTPVideoHeader.isFirstPacket to .is_first_packet_in_frame.

webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl_unittest.cc

Index: webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl_unittest.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl_unittest.cc b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl_unittest.cc
index dc4c73eb6fdf7791b09dc18f596745a66e5ca6aa..ae4aad7c8412112f25e942cf67416608290ae3d0 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl_unittest.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl_unittest.cc
@@ -199,9 +199,15 @@ class RtpRtcpImplTest : public ::testing::Test {
   void SendFrame(const RtpRtcpModule* module, uint8_t tid) {
     RTPVideoHeaderVP8 vp8_header = {};
     vp8_header.temporalIdx = tid;
-    RTPVideoHeader rtp_video_header = {
-        codec_.width, codec_.height, kVideoRotation_0, {-1, -1}, true, 0,
-        kRtpVideoVp8, {vp8_header}};
+    RTPVideoHeader rtp_video_header;
+    rtp_video_header.width = codec_.width;
+    rtp_video_header.height = codec_.height;
+    rtp_video_header.rotation = kVideoRotation_0;
+    rtp_video_header.playout_delay = {-1, -1};
+    rtp_video_header.is_first_packet_in_frame = true;
+    rtp_video_header.simulcastIdx = 0;
+    rtp_video_header.codec = kRtpVideoVp8;
+    rtp_video_header.codecHeader = {vp8_header};
 
     const uint8_t payload[100] = {0};
     EXPECT_EQ(true, module->impl_->SendOutgoingData(