[SPDY] Refactor SpdyStream state machine

net/spdy/spdy_http_stream.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/spdy/spdy_http_stream.h"
 
 #include <algorithm>
 #include <list>
 
 #include "base/bind.h"
@@ skipping 274 matching lines @@
   if (stream_) {
     stream_->Cancel();
     DCHECK(!stream_);
   }
 }
 
 void SpdyHttpStream::OnRequestHeadersSent() {
   if (!callback_.is_null())
     DoCallback(OK);
 
+  // TODO(akalin): Do this immediately after sending the request
+  // headers.
   if (HasUploadData())
     ReadAndSendRequestBodyData();
 }
 
 int SpdyHttpStream::OnResponseHeadersReceived(const SpdyHeaderBlock& response,
                                               base::Time response_time,
                                               int status) {
   if (!response_info_) {
     DCHECK_EQ(stream_->type(), SPDY_PUSH_STREAM);
     push_response_info_.reset(new HttpResponseInfo);
@@ skipping 238 matching lines @@
 bool SpdyHttpStream::IsSpdyHttpStream() const {
   return true;
 }
 
 void SpdyHttpStream::Drain(HttpNetworkSession* session) {
   Close(false);
   delete this;
 }
 
 }  // namespace net