Ensure SpdySession::StartGoingAway is always called with an error.

net/spdy/spdy_session_pool.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_session_pool.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/values.h"
 #include "net/base/address_list.h"
@@ skipping 266 matching lines @@
        it != current_sessions.end(); ++it) {
     if (!*it)
       continue;
 
 // For OSs that terminate TCP connections upon relevant network changes,
 // attempt to preserve active streams by marking all sessions as going
 // away, rather than explicitly closing them. Streams may still fail due
 // to a generated TCP reset.
 #if defined(OS_ANDROID) || defined(OS_WIN) || defined(OS_IOS)
     (*it)->MakeUnavailable();
-    (*it)->StartGoingAway(kLastStreamId, OK);
+    (*it)->StartGoingAway(kLastStreamId, ERR_NETWORK_CHANGED);
     (*it)->MaybeFinishGoingAway();
 #else
     (*it)->CloseSessionOnError(ERR_NETWORK_CHANGED,
                                "Closing current sessions.");
     DCHECK((*it)->IsDraining());
 #endif  // defined(OS_ANDROID) || defined(OS_WIN) || defined(OS_IOS)
     DCHECK(!IsSessionAvailable(*it));
   }
   http_server_properties_->ClearAllSpdySettings();
 }
@@ skipping 97 matching lines @@
 
     if (idle_only && (*it)->is_active())
       continue;
 
     (*it)->CloseSessionOnError(error, description);
     DCHECK(!IsSessionAvailable(*it));
   }
 }
 
 }  // namespace net