[SPDY] Add flag and about:flags entry for SPDY/4 alpha 1

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"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/stringprintf.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/net_log.h"
 #include "net/base/net_util.h"
 #include "net/base/upload_data_stream.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_request_info.h"
 #include "net/http/http_response_info.h"
 #include "net/spdy/spdy_header_block.h"
 #include "net/spdy/spdy_http_utils.h"
+#include "net/spdy/spdy_protocol.h"
 #include "net/spdy/spdy_session.h"
 
 namespace net {
 
 SpdyHttpStream::SpdyHttpStream(SpdySession* spdy_session,
                                bool direct)
     : ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)),
       spdy_session_(spdy_session),
       stream_closed_(false),
       closed_stream_pushed_(false),
@@ skipping 367 matching lines @@
   // will take care of that part.
   SSLInfo ssl_info;
   NextProto protocol_negotiated = kProtoUnknown;
   stream_->GetSSLInfo(&ssl_info,
                       &response_info_->was_npn_negotiated,
                       &protocol_negotiated);
   response_info_->npn_negotiated_protocol =
       SSLClientSocket::NextProtoToString(protocol_negotiated);
   response_info_->request_time = stream_->GetRequestTime();
   switch (spdy_session_->GetProtocolVersion()) {
-    case 2:
+    case kSpdyVersion2:
       response_info_->connection_info = HttpResponseInfo::CONNECTION_INFO_SPDY2;
       break;
-    case 3:
+    case kSpdyVersion3:
       response_info_->connection_info = HttpResponseInfo::CONNECTION_INFO_SPDY3;
       break;
+    case kSpdyVersion4:
+      response_info_->connection_info = HttpResponseInfo::CONNECTION_INFO_SPDY4;
+      break;
     default:
       NOTREACHED();
   }
   response_info_->vary_data.Init(*request_info_, *response_info_->headers);
   // TODO(ahendrickson): This is recorded after the entire SYN_STREAM control
   // frame has been received and processed.  Move to framer?
   response_info_->response_time = response_time;
 
   if (!callback_.is_null())
     DoCallback(status);
@@ skipping 165 matching lines @@
 bool SpdyHttpStream::IsSpdyHttpStream() const {
   return true;
 }
 
 void SpdyHttpStream::Drain(HttpNetworkSession* session) {
   Close(false);
   delete this;
 }
 
 }  // namespace net