Deleted unused method EstimateMTU, and the WinPing class.

webrtc/base/virtualsocketserver.h

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 293 matching lines @@
                SocketAddress* paddr,
                int64_t* timestamp) override;
   int Listen(int backlog) override;
   VirtualSocket* Accept(SocketAddress* paddr) override;
 
   int GetError() const override;
   void SetError(int error) override;
   ConnState GetState() const override;
   int GetOption(Option opt, int* value) override;
   int SetOption(Option opt, int value) override;
-  int EstimateMTU(uint16_t* mtu) override;
   void OnMessage(Message* pmsg) override;
 
   bool was_any() { return was_any_; }
   void set_was_any(bool was_any) { was_any_ = was_any; }
 
   // For testing purpose only. Fired when client socket is bound to an address.
   sigslot::signal2<VirtualSocket*, const SocketAddress&> SignalAddressReady;
 
  private:
   struct NetworkEntry {
@@ skipping 61 matching lines @@
 
   // Store the options that are set
   OptionsMap options_map_;
 
   friend class VirtualSocketServer;
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_VIRTUALSOCKETSERVER_H_