Remove VirtualSocketServer's dependency on PhysicalSocketServer.

webrtc/base/asynctcpsocket_unittest.cc

Index: webrtc/base/asynctcpsocket_unittest.cc
diff --git a/webrtc/base/asynctcpsocket_unittest.cc b/webrtc/base/asynctcpsocket_unittest.cc
index 592b61d536e6db24701548fa21f6233d35e81d75..bd7dcfbdbf0ff1f296b5a836ae83b8d86c790a27 100644
--- a/webrtc/base/asynctcpsocket_unittest.cc
+++ b/webrtc/base/asynctcpsocket_unittest.cc
@@ -13,7 +13,6 @@
 
 #include "webrtc/base/asynctcpsocket.h"
 #include "webrtc/base/gunit.h"
-#include "webrtc/base/physicalsocketserver.h"
 #include "webrtc/base/virtualsocketserver.h"
 
 namespace rtc {
@@ -23,8 +22,7 @@ class AsyncTCPSocketTest
       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) {
@@ -37,7 +35,6 @@ class AsyncTCPSocketTest
   }
 
  protected:
-  std::unique_ptr<PhysicalSocketServer> pss_;
   std::unique_ptr<VirtualSocketServer> vss_;
   AsyncSocket* socket_;
   std::unique_ptr<AsyncTCPSocket> tcp_socket_;