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

jingle/glue/proxy_resolving_client_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.
 //
 // This StreamSocket implementation wraps a ClientSocketHandle that is created
 // from the client socket pool after resolving proxies.
 
 #ifndef JINGLE_GLUE_PROXY_RESOLVING_CLIENT_SOCKET_H_
 #define JINGLE_GLUE_PROXY_RESOLVING_CLIENT_SOCKET_H_
 
@@ skipping 34 matching lines @@
       const scoped_refptr<net::URLRequestContextGetter>& request_context_getter,
       const net::SSLConfig& ssl_config,
       const net::HostPortPair& dest_host_port_pair);
   virtual ~ProxyResolvingClientSocket();
 
   // net::StreamSocket implementation.
   virtual int Read(net::IOBuffer* buf, int buf_len,
                    const net::CompletionCallback& callback) OVERRIDE;
   virtual int Write(net::IOBuffer* buf, int buf_len,
                     const net::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;
   virtual int Connect(const net::CompletionCallback& callback) OVERRIDE;
   virtual void Disconnect() OVERRIDE;
   virtual bool IsConnected() const OVERRIDE;
   virtual bool IsConnectedAndIdle() const OVERRIDE;
   virtual int GetPeerAddress(net::IPEndPoint* address) const OVERRIDE;
   virtual int GetLocalAddress(net::IPEndPoint* address) const OVERRIDE;
   virtual const net::BoundNetLog& NetLog() const OVERRIDE;
   virtual void SetSubresourceSpeculation() OVERRIDE;
   virtual void SetOmniboxSpeculation() OVERRIDE;
   virtual bool WasEverUsed() const OVERRIDE;
@@ skipping 33 matching lines @@
   net::CompletionCallback user_connect_callback_;
 
   base::WeakPtrFactory<ProxyResolvingClientSocket> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ProxyResolvingClientSocket);
 };
 
 }  // namespace jingle_glue
 
 #endif  // JINGLE_GLUE_PROXY_RESOLVING_CLIENT_SOCKET_H_