Revert of Fix SPDY error-handling if the connection gets closed just after use.

net/spdy/spdy_session_pool.h

 // 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.
 
 #ifndef NET_SPDY_SPDY_SESSION_POOL_H_
 #define NET_SPDY_SPDY_SESSION_POOL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 61 matching lines @@
   // Create a new SPDY session from an existing socket.  There must
   // not already be a session for the given key. This pool must have
   // been constructed with a valid |default_protocol| value.
   //
   // |is_secure| can be false for testing or when SPDY is configured
   // to work with non-secure sockets. If |is_secure| is true,
   // |certificate_error_code| indicates that the certificate error
   // encountered when connecting the SSL socket, with OK meaning there
   // was no error.
   //
-  // Returns the new SpdySession. Note that the SpdySession begins reading from
-  // |connection| on a subsequent event loop iteration, so it may be closed
-  // immediately afterwards if the first read of |connection| fails.
-  base::WeakPtr<SpdySession> CreateAvailableSessionFromSocket(
+  // If successful, OK is returned and |available_session| will be
+  // non-NULL and available. Otherwise, an error is returned and
+  // |available_session| will be NULL.
+  net::Error CreateAvailableSessionFromSocket(
       const SpdySessionKey& key,
       scoped_ptr<ClientSocketHandle> connection,
       const BoundNetLog& net_log,
       int certificate_error_code,
+      base::WeakPtr<SpdySession>* available_session,
       bool is_secure);
 
   // Find an available session for the given key, or NULL if there isn't one.
   base::WeakPtr<SpdySession> FindAvailableSession(const SpdySessionKey& key,
                                                   const BoundNetLog& net_log);
 
   // Remove all mappings and aliases for the given session, which must
   // still be available. Except for in tests, this must be called by
   // the given session itself.
   void MakeSessionUnavailable(
@@ skipping 124 matching lines @@
   // This SPDY proxy is allowed to push resources from origins that are
   // different from those of their associated streams.
   HostPortPair trusted_spdy_proxy_;
 
   DISALLOW_COPY_AND_ASSIGN(SpdySessionPool);
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_SESSION_POOL_H_