Removing `preference` field from `cricket::Codec`.

webrtc/media/base/videoengine_unittest.h

Index: webrtc/media/base/videoengine_unittest.h
diff --git a/webrtc/media/base/videoengine_unittest.h b/webrtc/media/base/videoengine_unittest.h
index 929c948d4505a97449b04cf477ac1f8f8eb2a5e3..88cf77f6fe12b454067f9402340e0a13cf56ca77 100644
--- a/webrtc/media/base/videoengine_unittest.h
+++ b/webrtc/media/base/videoengine_unittest.h
@@ -172,7 +172,7 @@ class VideoMediaChannelTest : public testing::Test,
   }
 
   bool SetOneCodec(int pt, const char* name, int w, int h, int fr) {
-    return SetOneCodec(cricket::VideoCodec(pt, name, w, h, fr, 0));
+    return SetOneCodec(cricket::VideoCodec(pt, name, w, h, fr));
   }
   bool SetOneCodec(const cricket::VideoCodec& codec) {
     cricket::VideoFormat capture_format(codec.width, codec.height,