make SetReceiveBufferSize and SetSendBufferSize return net error codes (instead of bools)

net/socket/buffered_write_stream_socket.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_SOCKET_BUFFERED_WRITE_STREAM_SOCKET_H_
 #define NET_SOCKET_BUFFERED_WRITE_STREAM_SOCKET_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 25 matching lines @@
 class NET_EXPORT_PRIVATE BufferedWriteStreamSocket : public StreamSocket {
  public:
   explicit BufferedWriteStreamSocket(scoped_ptr<StreamSocket> socket_to_wrap);
   virtual ~BufferedWriteStreamSocket();
 
   // Socket interface
   virtual int Read(IOBuffer* buf, int buf_len,
                    const CompletionCallback& callback) OVERRIDE;
   virtual int Write(IOBuffer* buf, int buf_len,
                     const CompletionCallback& callback) OVERRIDE;
-  virtual bool SetReceiveBufferSize(int32 size) OVERRIDE;
-  virtual bool SetSendBufferSize(int32 size) OVERRIDE;
+  virtual int SetReceiveBufferSize(int32 size) OVERRIDE;
+  virtual int SetSendBufferSize(int32 size) OVERRIDE;
 
   // StreamSocket interface
   virtual int Connect(const CompletionCallback& callback) OVERRIDE;
   virtual void Disconnect() OVERRIDE;
   virtual bool IsConnected() const OVERRIDE;
   virtual bool IsConnectedAndIdle() const OVERRIDE;
   virtual int GetPeerAddress(IPEndPoint* address) const OVERRIDE;
   virtual int GetLocalAddress(IPEndPoint* address) const OVERRIDE;
   virtual const BoundNetLog& NetLog() const OVERRIDE;
   virtual void SetSubresourceSpeculation() OVERRIDE;
@@ skipping 16 matching lines @@
   int error_;
 
   base::WeakPtrFactory<BufferedWriteStreamSocket> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BufferedWriteStreamSocket);
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_STREAM_SOCKET_H_