Remove VirtualSocketServer's dependency on PhysicalSocketServer.

webrtc/base/asynctcpsocket_unittest.cc

 /*
  *  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.
  */
 
 #include <memory>
 #include <string>
 
 #include "webrtc/base/asynctcpsocket.h"
 #include "webrtc/base/gunit.h"
-#include "webrtc/base/physicalsocketserver.h"
 #include "webrtc/base/virtualsocketserver.h"
 
 namespace rtc {
 
 class AsyncTCPSocketTest
     : public testing::Test,
       public sigslot::has_slots<> {
  public:
   AsyncTCPSocketTest()
-      : pss_(new rtc::PhysicalSocketServer),
-        vss_(new rtc::VirtualSocketServer(pss_.get())),
+      : vss_(new rtc::VirtualSocketServer()),
         socket_(vss_->CreateAsyncSocket(SOCK_STREAM)),
         tcp_socket_(new AsyncTCPSocket(socket_, true)),
         ready_to_send_(false) {
     tcp_socket_->SignalReadyToSend.connect(this,
                                            &AsyncTCPSocketTest::OnReadyToSend);
   }
 
   void OnReadyToSend(rtc::AsyncPacketSocket* socket) {
     ready_to_send_ = true;
   }
 
  protected:
-  std::unique_ptr<PhysicalSocketServer> pss_;
   std::unique_ptr<VirtualSocketServer> vss_;
   AsyncSocket* socket_;
   std::unique_ptr<AsyncTCPSocket> tcp_socket_;
   bool ready_to_send_;
 };
 
 TEST_F(AsyncTCPSocketTest, OnWriteEvent) {
   EXPECT_FALSE(ready_to_send_);
   socket_->SignalWriteEvent(socket_);
   EXPECT_TRUE(ready_to_send_);
 }
 
 }  // namespace rtc