Remove VirtualSocketServer's dependency on PhysicalSocketServer.

webrtc/p2p/base/turnserver_unittest.cc

Index: webrtc/p2p/base/turnserver_unittest.cc
diff --git a/webrtc/p2p/base/turnserver_unittest.cc b/webrtc/p2p/base/turnserver_unittest.cc
index 631eb46466eeb9c2bdf762d8c7fe667ad8aba1dd..970da4759a655c0e0ff64b18274552af5a7a6d8e 100644
--- a/webrtc/p2p/base/turnserver_unittest.cc
+++ b/webrtc/p2p/base/turnserver_unittest.cc
@@ -9,7 +9,6 @@
  */
 
 #include "webrtc/base/gunit.h"
-#include "webrtc/base/physicalsocketserver.h"
 #include "webrtc/base/virtualsocketserver.h"
 #include "webrtc/p2p/base/basicpacketsocketfactory.h"
 #include "webrtc/p2p/base/turnserver.h"
@@ -21,7 +20,7 @@ namespace cricket {
 
 class TurnServerConnectionTest : public testing::Test {
  public:
-  TurnServerConnectionTest() : vss_(&pss_), thread_(&vss_) {}
+  TurnServerConnectionTest() : thread_(&vss_) {}
 
   void ExpectEqual(const TurnServerConnection& a,
                    const TurnServerConnection& b) {
@@ -39,7 +38,6 @@ class TurnServerConnectionTest : public testing::Test {
   }
 
  protected:
-  rtc::PhysicalSocketServer pss_;
   rtc::VirtualSocketServer vss_;
   rtc::AutoSocketServerThread thread_;
   // Since this is constructed after |thread_|, it will pick up |threads_|'s