Add parameter to TransportController to not change ICE role on restart.

webrtc/p2p/base/faketransportcontroller.h

Index: webrtc/p2p/base/faketransportcontroller.h
diff --git a/webrtc/p2p/base/faketransportcontroller.h b/webrtc/p2p/base/faketransportcontroller.h
index c15e164f41eed0f5915c849383d7dce2374e8ea4..d79525490ea3271ef38d201de1298d6e2ee68b13 100644
--- a/webrtc/p2p/base/faketransportcontroller.h
+++ b/webrtc/p2p/base/faketransportcontroller.h
@@ -504,6 +504,13 @@ class FakeTransportController : public TransportController {
                             nullptr),
         fail_create_channel_(false) {}
 
+  explicit FakeTransportController(bool redetermine_role_on_ice_restart)
+      : TransportController(rtc::Thread::Current(),
+                            rtc::Thread::Current(),
+                            nullptr,
+                            redetermine_role_on_ice_restart),
+        fail_create_channel_(false) {}
+
   explicit FakeTransportController(IceRole role)
       : TransportController(rtc::Thread::Current(),
                             rtc::Thread::Current(),