Cast:Adding cast_transport_config and cleaning up

media/cast/transport/pacing/paced_sender_unittest.cc

Index: media/cast/transport/pacing/paced_sender_unittest.cc
diff --git a/media/cast/transport/pacing/paced_sender_unittest.cc b/media/cast/transport/pacing/paced_sender_unittest.cc
index ec23b7fd04c1b7a34b84e5728e1d7692ea0f9579..9d8e2a8f3d1e497c5f3aa96f65d5ba027ad20557 100644
--- a/media/cast/transport/pacing/paced_sender_unittest.cc
+++ b/media/cast/transport/pacing/paced_sender_unittest.cc
@@ -59,10 +59,8 @@ class PacedSenderTest : public ::testing::Test {
 
   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_,
-        GetDefaultCastLoggingConfig());
-    paced_sender_.reset(new PacedSender(cast_environment_, &mock_transport_));
+    paced_sender_.reset(
+        new PacedSender(&testing_clock_, &mock_transport_, task_runner_));
   }
 
   PacketList CreatePacketList(size_t packet_size, int num_of_packets_in_frame) {
@@ -77,7 +75,6 @@ class PacedSenderTest : public ::testing::Test {
   TestPacketSender mock_transport_;
   scoped_refptr<test::FakeTaskRunner> task_runner_;
   scoped_ptr<PacedSender> paced_sender_;
-  scoped_refptr<CastEnvironment> cast_environment_;
 };
 
 TEST_F(PacedSenderTest, PassThroughRtcp) {