[SPDY] Use WeakPtr<SpdySession> everywhere but SpdySessionPool

net/spdy/spdy_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_stream.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 60 matching lines @@
     DCHECK_GT(stream_->stream_id(), 0u);
     return scoped_ptr<SpdyBuffer>(
         new SpdyBuffer(stream_->ProduceSynStreamFrame()));
   }
 
  private:
   const base::WeakPtr<SpdyStream> stream_;
 };
 
 SpdyStream::SpdyStream(SpdyStreamType type,
-                       SpdySession* session,
+                       const base::WeakPtr<SpdySession>& session,
                        const GURL& url,
                        RequestPriority priority,
                        int32 initial_send_window_size,
                        int32 initial_recv_window_size,
                        const BoundNetLog& net_log)
     : type_(type),
       weak_ptr_factory_(this),
       in_do_loop_(false),
       continue_buffering_data_(type_ == SPDY_PUSH_STREAM),
       stream_id_(0),
@@ skipping 933 matching lines @@
       }
     } else if (weak_this) {
       response_headers_status_ = RESPONSE_HEADERS_ARE_COMPLETE;
     }
   }
 
   return OK;
 }
 
 }  // namespace net