Move socket related files from net/base to net/socket.

net/base/client_socket.h

-// Copyright (c) 2006-2008 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_BASE_CLIENT_SOCKET_H_
-#define NET_BASE_CLIENT_SOCKET_H_
-
-#include "build/build_config.h"
-
-#if defined(OS_LINUX)
-#include <sys/socket.h>
-#endif
-
-#include "net/base/socket.h"
-
-namespace net {
-
-class ClientSocket : public Socket {
- public:
-  // Called to establish a connection.  Returns OK if the connection could be
-  // established synchronously.  Otherwise, ERR_IO_PENDING is returned and the
-  // given callback will run asynchronously when the connection is established
-  // or when an error occurs.  The result is some other error code if the
-  // connection could not be established.
-  //
-  // The socket's Read and Write methods may not be called until Connect
-  // succeeds.
-  //
-  // It is valid to call Connect on an already connected socket, in which case
-  // OK is simply returned.
-  //
-  // Connect may also be called again after a call to the Disconnect method.
-  //
-  virtual int Connect(CompletionCallback* callback) = 0;
-
-  // Called to disconnect a connected socket.  Does nothing if the socket is
-  // already disconnected.  After calling Disconnect it is possible to call
-  // Connect again to establish a new connection.
-  virtual void Disconnect() = 0;
-
-  // Called to test if the connection is still alive.  Returns false if a
-  // connection wasn't established or the connection is dead.
-  virtual bool IsConnected() const = 0;
-
-  // Called to test if the connection is still alive and idle.  Returns false
-  // if a connection wasn't established, the connection is dead, or some data
-  // have been received.
-  virtual bool IsConnectedAndIdle() const = 0;
-
-#if defined(OS_LINUX)
-  // Identical to posix system call getpeername().
-  // Needed by ssl_client_socket_nss.
-  virtual int GetPeerName(struct sockaddr *name, socklen_t *namelen);
-#endif
-};
-
-}  // namespace net
-
-#endif  // NET_BASE_CLIENT_SOCKET_H_