Propogate network-worker thread split to api

webrtc/api/peerconnectioninterface_unittest.cc

Index: webrtc/api/peerconnectioninterface_unittest.cc
diff --git a/webrtc/api/peerconnectioninterface_unittest.cc b/webrtc/api/peerconnectioninterface_unittest.cc
index 68c932b5aae1bacf9380a2613e114ee8e8f1c62c..22d36623836bfd5310375eae11f8c9206f46347b 100644
--- a/webrtc/api/peerconnectioninterface_unittest.cc
+++ b/webrtc/api/peerconnectioninterface_unittest.cc
@@ -545,9 +545,9 @@ class PeerConnectionInterfaceTest : public testing::Test {
 
   virtual void SetUp() {
     pc_factory_ = webrtc::CreatePeerConnectionFactory(
-        rtc::Thread::Current(), rtc::Thread::Current(), NULL, NULL,
-        NULL);
-    ASSERT_TRUE(pc_factory_.get() != NULL);
+        rtc::Thread::Current(), rtc::Thread::Current(), rtc::Thread::Current(),
+        nullptr, nullptr, nullptr);
+    ASSERT_TRUE(pc_factory_);
   }
 
   void CreatePeerConnection() {