Reduce the amount of included header files. Vast change like in "Oh God! This...

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 "base/logging.h"
+#include "build/build_config.h"
+
+#if defined(OS_LINUX)
+#include <sys/socket.h>
+#endif
+
 #include "net/base/socket.h"
-#include "net/base/net_errors.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.
@@ skipping 18 matching lines @@
   // 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;
 
 #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) {
-    // Default implementation just permits some unit tests to link.
-    NOTREACHED();
-    return ERR_UNEXPECTED;
-  }
+  virtual int GetPeerName(struct sockaddr *name, socklen_t *namelen);
 #endif
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_CLIENT_SOCKET_H_