Cast:Adding cast_transport_config and cleaning up

media/cast/video_sender/video_sender_unittest.cc

Index: media/cast/video_sender/video_sender_unittest.cc
diff --git a/media/cast/video_sender/video_sender_unittest.cc b/media/cast/video_sender/video_sender_unittest.cc
index 9082da14b95d87c59ca0b966d2605c27b45fe829..9f8e5447bfec22a6c21dfd136a3cb877f6f3cb39 100644
--- a/media/cast/video_sender/video_sender_unittest.cc
+++ b/media/cast/video_sender/video_sender_unittest.cc
@@ -69,7 +69,7 @@ class VideoSenderTest : public ::testing::Test {
     video_config.min_qp = 0;
     video_config.max_frame_rate = 30;
     video_config.max_number_of_video_buffers_used = 1;
-    video_config.codec = kVp8;
+    video_config.codec = transport::kVp8;
 
     if (external) {
       video_sender_.reset(new PeerVideoSender(cast_environment_,
@@ -121,10 +121,10 @@ TEST_F(VideoSenderTest, ExternalEncoder) {
   EXPECT_CALL(mock_video_encoder_controller_, SkipNextFrame(false)).Times(1);
   InitEncoder(true);
 
-  EncodedVideoFrame video_frame;
+  transport::EncodedVideoFrame video_frame;
   base::TimeTicks capture_time;
 
-  video_frame.codec = kVp8;
+  video_frame.codec = transport::kVp8;
   video_frame.key_frame = true;
   video_frame.frame_id = 0;
   video_frame.last_referenced_frame_id = 0;
@@ -141,10 +141,10 @@ TEST_F(VideoSenderTest, RtcpTimer) {
               SkipNextFrame(false)).Times(AtLeast(1));
   InitEncoder(true);
 
-  EncodedVideoFrame video_frame;
+  transport::EncodedVideoFrame video_frame;
   base::TimeTicks capture_time;
 
-  video_frame.codec = kVp8;
+  video_frame.codec = transport::kVp8;
   video_frame.key_frame = true;
   video_frame.frame_id = 0;
   video_frame.last_referenced_frame_id = 0;