1 files changed, 4 insertions, 0 deletions
diff --git a/media/base/media_format.h b/media/base/media_format.h
index 298d68c..f30be02 100644
--- a/media/base/media_format.h
+++ b/media/base/media_format.h
@@ -52,6 +52,10 @@ class MediaFormat {
   static const char kChannels[];
   static const char kWidth[];
   static const char kHeight[];
+  static const char kBitRate[];
+  static const char kBitsPerCodedSample[];
+  static const char kBlockAlign[];
+  static const char kFrameSize[];
 
   MediaFormat();
   ~MediaFormat();