Revert 243647 "Cast:Adding cast_transport_config and cleaning up"

trunk/src/media/cast/audio_sender/audio_sender_unittest.cc

Index: trunk/src/media/cast/audio_sender/audio_sender_unittest.cc
===================================================================
--- trunk/src/media/cast/audio_sender/audio_sender_unittest.cc	(revision 243647)
+++ trunk/src/media/cast/audio_sender/audio_sender_unittest.cc	(working copy)
@@ -38,9 +38,9 @@
   virtual void SetUp() {
     task_runner_ = new test::FakeTaskRunner(&testing_clock_);
     cast_environment_ = new CastEnvironment(&testing_clock_, task_runner_,
-        task_runner_, task_runner_, task_runner_, task_runner_, task_runner_,
+        task_runner_, task_runner_, task_runner_, task_runner_,
         GetDefaultCastLoggingConfig());
-    audio_config_.codec = transport::kOpus;
+    audio_config_.codec = kOpus;
     audio_config_.use_external_encoder = false;
     audio_config_.frequency = kDefaultAudioSamplingRate;
     audio_config_.channels = 2;