message: Create socket server explicitly in PeerConnectionEndToEndBaseTest
  Cr-Commit-Position: refs/heads/main@{#35435}
diff: #include "media/sctp/sctp_transport_internal.h"
  #include "rtc_base/gunit.h"
  #include "rtc_base/logging.h"
  +#include "rtc_base/physical_socket_server.h"
  #ifdef WEBRTC_ANDROID
  #include "pc/test/android_test_initializer.h"
  @@ -54,9 +55,9 @@ class PeerConnectionEndToEndBaseTest : public sigslot::has_slots<>,
  public:
  typedef std::vector<rtc::scoped_refptr<DataChannelInterface>> DataChannelList;
  - explicit PeerConnectionEndToEndBaseTest(SdpSemantics sdp_semantics) {
  - network_thread_ = rtc::Thread::CreateWithSocketServer();
  - worker_thread_ = rtc::Thread::Create();
  + explicit PeerConnectionEndToEndBaseTest(SdpSemantics sdp_semantics)
  + : network_thread_(std::make_unique<rtc::Thread>(&pss_)),
  + worker_thread_(rtc::Thread::Create()) {
  RTC_CHECK(network_thread_->Start());
  RTC_CHECK(worker_thread_->Start());
  caller_ = new rtc::RefCountedObject<PeerConnectionTestWrapper>(
  @@ -191,6 +192,7 @@ class PeerConnectionEndToEndBaseTest : public sigslot::has_slots<>,
  }
  protected:
  + rtc::PhysicalSocketServer pss_;
  std::unique_ptr<rtc::Thread> network_thread_;
  std::unique_ptr<rtc::Thread> worker_thread_;
  rtc::scoped_refptr<PeerConnectionTestWrapper> caller_;
  