Introduce error handling in QuicHttpStream on UploadDataStream::Read() failure.

net/quic/quic_http_stream.cc

Index: net/quic/quic_http_stream.cc
diff --git a/net/quic/quic_http_stream.cc b/net/quic/quic_http_stream.cc
index 803f84c7b54a8848281f520454d7d26c7f630545..f3ca047b207d91076617eec83e71e401069d796a 100644
--- a/net/quic/quic_http_stream.cc
+++ b/net/quic/quic_http_stream.cc
@@ -668,8 +668,12 @@ int QuicHttpStream::DoReadRequestBody() {
 int QuicHttpStream::DoReadRequestBodyComplete(int rv) {
   // |rv| is the result of read from the request body from the last call to
   // DoSendBody().
-  if (rv < 0)
+  if (rv < 0) {
+    if (!callback_.is_null())
+      DoCallback(rv);

[mmenke, 2016/06/02 15:17:58]

I don't think you need to invoke the callback here - it looks like this class is
designed to work much like HttpStreamParser, so I think you can just return rv
here

[maksims (do not use this acc), 2016/06/03 09:40:31]

Done.

+    stream_->Reset(QUIC_ERROR_PROCESSING_STREAM);
     return rv;
+  }
 
   // If the stream is already closed, don't continue.
   if (!stream_)