Add a switch to redetermine role when ICE restarts.

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 0b24fcb7cfc4d119af78dacd4258d84f6188aa76..d9c8af0b4c28697dd2806652f35c60e4b7d985ac 100644
--- a/webrtc/api/peerconnectioninterface_unittest.cc
+++ b/webrtc/api/peerconnectioninterface_unittest.cc
@@ -568,9 +568,11 @@ class PeerConnectionFactoryForTest : public webrtc::PeerConnectionFactory {
   }
 
   cricket::TransportController* CreateTransportController(
-      cricket::PortAllocator* port_allocator) override {
+      cricket::PortAllocator* port_allocator,
+      bool redetermine_role_on_ice_restart) override {
     transport_controller = new cricket::TransportController(
-        rtc::Thread::Current(), rtc::Thread::Current(), port_allocator);
+        rtc::Thread::Current(), rtc::Thread::Current(), port_allocator,
+        redetermine_role_on_ice_restart);
     return transport_controller;
   }