Log sending HTTP/2 HEADERS frames correctly.

This CL changes the event type logged when HTTP/2 HEADERS frame is sent to
reflect that fact that it is not a SYN_STREAM (which does not even exist in
HTTP2).

BUG=456986

Review URL: https://codereview.chromium.org/959903002

Cr-Commit-Position: refs/heads/master@{#318249}

net/spdy/spdy_network_transaction_unittest.cc

@@ -3779,9 +3779,12 @@ TEST_P(SpdyNetworkTransactionTest, NetLog) {
       net::NetLog::PHASE_END);
 
   // Check that we logged all the headers correctly
-  pos = net::ExpectLogContainsSomewhere(
-      entries, 0, net::NetLog::TYPE_HTTP2_SESSION_SYN_STREAM,
-      net::NetLog::PHASE_NONE);
+  const NetLog::EventType type =
+      (GetParam().protocol <= kProtoSPDY31)
+          ? net::NetLog::TYPE_HTTP2_SESSION_SYN_STREAM
+          : net::NetLog::TYPE_HTTP2_SESSION_SEND_HEADERS;
+  pos = net::ExpectLogContainsSomewhere(entries, 0, type,
+                                        net::NetLog::PHASE_NONE);
 
   base::ListValue* header_list;
   ASSERT_TRUE(entries[pos].params.get());

net/spdy/spdy_session.cc

@@ -1083,7 +1083,11 @@ scoped_ptr<SpdyFrame> SpdySession::CreateSynStream(
   streams_initiated_count_++;
 
   if (net_log().IsLogging()) {
-    net_log().AddEvent(NetLog::TYPE_HTTP2_SESSION_SYN_STREAM,
+    const NetLog::EventType type =
+        (GetProtocolVersion() <= SPDY3)
+            ? NetLog::TYPE_HTTP2_SESSION_SYN_STREAM
+            : NetLog::TYPE_HTTP2_SESSION_SEND_HEADERS;
+    net_log().AddEvent(type,
                        base::Bind(&NetLogSpdySynStreamSentCallback, &block,
                                   (flags & CONTROL_FLAG_FIN) != 0,
                                   (flags & CONTROL_FLAG_UNIDIRECTIONAL) != 0,