[SPDY] Use WeakPtr<SpdySession> everywhere but SpdySessionPool

net/spdy/spdy_websocket_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_websocket_stream.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/spdy/spdy_framer.h"
 #include "net/spdy/spdy_protocol.h"
 #include "net/spdy/spdy_session.h"
 #include "net/spdy/spdy_stream.h"
 #include "url/gurl.h"
 
 namespace net {
 
 SpdyWebSocketStream::SpdyWebSocketStream(
-    SpdySession* spdy_session, Delegate* delegate)
+    const base::WeakPtr<SpdySession>& spdy_session, Delegate* delegate)
     : weak_ptr_factory_(this),
       spdy_session_(spdy_session),
       pending_send_data_length_(0),
       delegate_(delegate) {
   DCHECK(spdy_session_.get());
   DCHECK(delegate_);
 }
 
 SpdyWebSocketStream::~SpdyWebSocketStream() {
   delegate_ = NULL;
   Close();
 }
 
 int SpdyWebSocketStream::InitializeStream(const GURL& url,
                                           RequestPriority request_priority,
                                           const BoundNetLog& net_log) {
-  if (spdy_session_->IsClosed())
+  if (!spdy_session_)
     return ERR_SOCKET_NOT_CONNECTED;
 
   int rv = stream_request_.StartRequest(
       SPDY_BIDIRECTIONAL_STREAM, spdy_session_, url, request_priority, net_log,
       base::Bind(&SpdyWebSocketStream::OnSpdyStreamCreated,
                  weak_ptr_factory_.GetWeakPtr()));
 
   if (rv == OK) {
     stream_ = stream_request_.ReleaseStream();
     DCHECK(stream_.get());
@@ skipping 72 matching lines @@
   if (result == OK) {
     stream_ = stream_request_.ReleaseStream();
     DCHECK(stream_.get());
     stream_->SetDelegate(this);
   }
   DCHECK(delegate_);
   delegate_->OnCreatedSpdyStream(result);
 }
 
 }  // namespace net