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

net/spdy/spdy_session_pool.h

Index: net/spdy/spdy_session_pool.h
diff --git a/net/spdy/spdy_session_pool.h b/net/spdy/spdy_session_pool.h
index 0fad5d2d46b381b3dc8b2e632336e5631f921a66..c44e9de51b5655a4b518bb02da5b378cb3e54754 100644
--- a/net/spdy/spdy_session_pool.h
+++ b/net/spdy/spdy_session_pool.h
@@ -79,14 +79,15 @@
   // 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.