Remove VirtualSocketServer's dependency on PhysicalSocketServer.

webrtc/base/ssladapter_unittest.cc

 /*
  *  Copyright 2014 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 256 matching lines @@
 
   std::string data_;
 };
 
 class SSLAdapterTestBase : public testing::Test,
                            public sigslot::has_slots<> {
  public:
   explicit SSLAdapterTestBase(const rtc::SSLMode& ssl_mode,
                               const rtc::KeyParams& key_params)
       : ssl_mode_(ssl_mode),
-        vss_(new rtc::VirtualSocketServer(nullptr)),
+        vss_(new rtc::VirtualSocketServer()),
         thread_(vss_.get()),
         server_(new SSLAdapterTestDummyServer(ssl_mode_, key_params)),
         client_(new SSLAdapterTestDummyClient(ssl_mode_)),
         handshake_wait_(kTimeout) {}
 
   void SetHandshakeWait(int wait) {
     handshake_wait_ = wait;
   }
 
   void TestHandshake(bool expect_success) {
@@ skipping 123 matching lines @@
 TEST_F(SSLAdapterTestDTLS_RSA, TestDTLSTransfer) {
   TestHandshake(true);
   TestTransfer("Hello, world!");
 }
 
 // Test transfer between client and server, using ECDSA
 TEST_F(SSLAdapterTestDTLS_ECDSA, TestDTLSTransfer) {
   TestHandshake(true);
   TestTransfer("Hello, world!");
 }