Propagate task queue to create test::DirectTransport by TaskQueueBase interface

actual task queue implementation for these tests is intentionally unchanged for now.

while at it, change return type of created transports to unique_ptr to note passing ownership.

Bug: webrtc:10933
Change-Id: I324597b503e647c471f43511340eb9c07ba03ee8
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/154743
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29335}
diff --git a/test/call_test.h b/test/call_test.h
index b1990a7..234741b 100644
--- a/test/call_test.h
+++ b/test/call_test.h
@@ -17,6 +17,7 @@
 
 #include "absl/types/optional.h"
 #include "api/rtc_event_log/rtc_event_log.h"
+#include "api/task_queue/task_queue_base.h"
 #include "api/task_queue/task_queue_factory.h"
 #include "api/test/video/function_video_decoder_factory.h"
 #include "api/test/video/function_video_encoder_factory.h"
@@ -260,11 +261,11 @@
 
   virtual void OnCallsCreated(Call* sender_call, Call* receiver_call);
 
-  virtual test::PacketTransport* CreateSendTransport(
-      DEPRECATED_SingleThreadedTaskQueueForTesting* task_queue,
+  virtual std::unique_ptr<test::PacketTransport> CreateSendTransport(
+      TaskQueueBase* task_queue,
       Call* sender_call);
-  virtual test::PacketTransport* CreateReceiveTransport(
-      DEPRECATED_SingleThreadedTaskQueueForTesting* task_queue);
+  virtual std::unique_ptr<test::PacketTransport> CreateReceiveTransport(
+      TaskQueueBase* task_queue);
 
   virtual void ModifyVideoConfigs(
       VideoSendStream::Config* send_config,