Update from https://crrev.com/307330

net/tools/quic/quic_client.cc

Index: net/tools/quic/quic_client.cc
diff --git a/net/tools/quic/quic_client.cc b/net/tools/quic/quic_client.cc
index 74874d71b3b0122d3af0e0100ce63a83b32e5fdf..6264be0471b38445151fd9ceb2b2fc7c5622da5a 100644
--- a/net/tools/quic/quic_client.cc
+++ b/net/tools/quic/quic_client.cc
@@ -235,6 +235,10 @@ void QuicClient::SendRequestsAndWaitForResponse(
     headers.SetRequestFirstlineFromStringPieces("GET", args[i], "HTTP/1.1");
     QuicSpdyClientStream* stream = CreateReliableClientStream();
     DCHECK(stream != nullptr);
+    if (stream == nullptr) {
+      LOG(ERROR) << "stream creation failed!";
+      break;
+    }
     stream->SendRequest(headers, "", true);
     stream->set_visitor(this);
   }
@@ -317,6 +321,10 @@ bool QuicClient::connected() const {
       session_->connection()->connected();
 }
 
+bool QuicClient::goaway_received() const {
+  return session_ != nullptr && session_->goaway_received();
+}
+
 QuicConnectionId QuicClient::GenerateConnectionId() {
   return QuicRandom::GetInstance()->RandUint64();
 }