Remove BaseChannel's dependency on TransportController.

webrtc/api/rtpsenderreceiver_unittest.cc

Index: webrtc/api/rtpsenderreceiver_unittest.cc
diff --git a/webrtc/api/rtpsenderreceiver_unittest.cc b/webrtc/api/rtpsenderreceiver_unittest.cc
index a79b2976b6cf76f4d68464110c657c2cba4d8886..b6c51841bdd829c707d782e70882ea4b5fba2af3 100644
--- a/webrtc/api/rtpsenderreceiver_unittest.cc
+++ b/webrtc/api/rtpsenderreceiver_unittest.cc
@@ -64,12 +64,17 @@ class RtpSenderReceiverTest : public testing::Test {
     channel_manager_.Init();
     bool rtcp_enabled = false;
     bool srtp_required = true;
+    cricket::TransportChannel* rtp_transport =
+        fake_transport_controller_.CreateTransportChannel(
+            cricket::CN_AUDIO, cricket::ICE_CANDIDATE_COMPONENT_RTP);
     voice_channel_ = channel_manager_.CreateVoiceChannel(
-        &fake_media_controller_, &fake_transport_controller_, cricket::CN_AUDIO,
-        nullptr, rtcp_enabled, srtp_required, cricket::AudioOptions());
+        &fake_media_controller_, rtp_transport, nullptr, rtc::Thread::Current(),
+        cricket::CN_AUDIO, nullptr, rtcp_enabled, srtp_required,
+        cricket::AudioOptions());
     video_channel_ = channel_manager_.CreateVideoChannel(
-        &fake_media_controller_, &fake_transport_controller_, cricket::CN_VIDEO,
-        nullptr, rtcp_enabled, srtp_required, cricket::VideoOptions());
+        &fake_media_controller_, rtp_transport, nullptr, rtc::Thread::Current(),
+        cricket::CN_VIDEO, nullptr, rtcp_enabled, srtp_required,
+        cricket::VideoOptions());
     voice_media_channel_ = media_engine_->GetVoiceChannel(0);
     video_media_channel_ = media_engine_->GetVideoChannel(0);
     RTC_CHECK(voice_channel_);