relnote: Inline all frames smaller than a pointer into QuicFrame.

net/quic/quic_framer.cc

Index: net/quic/quic_framer.cc
diff --git a/net/quic/quic_framer.cc b/net/quic/quic_framer.cc
index a04824a0684ab89a8bbeb94aa3e3990cc1f1bf6c..114f43f63e9a83c4ea7f1870a4b5a7acb578c05c 100644
--- a/net/quic/quic_framer.cc
+++ b/net/quic/quic_framer.cc
@@ -268,7 +268,8 @@ size_t QuicFramer::GetSerializedFrameLength(
     InFecGroup is_in_fec_group,
     QuicPacketNumberLength packet_number_length) {
   // Prevent a rare crash reported in b/19458523.
-  if (frame.stream_frame == nullptr) {
+  if ((frame.type == STREAM_FRAME || frame.type == ACK_FRAME) &&
+      frame.stream_frame == nullptr) {
     LOG(DFATAL) << "Cannot compute the length of a null frame. "
                 << "type:" << frame.type << "free_bytes:" << free_bytes
                 << " first_frame:" << first_frame
@@ -397,7 +398,7 @@ QuicPacket* QuicFramer::BuildDataPacket(const QuicPacketHeader& header,
         }
         break;
       case BLOCKED_FRAME:
-        if (!AppendBlockedFrame(*frame.blocked_frame, &writer)) {
+        if (!AppendBlockedFrame(frame.blocked_frame, &writer)) {
           LOG(DFATAL) << "AppendBlockedFrame failed";
           return nullptr;
         }