Change C core surface API
diff --git a/build.yaml b/build.yaml
index d15cf03..ed899a2 100644
--- a/build.yaml
+++ b/build.yaml
@@ -193,6 +193,7 @@
   - src/core/lib/channel/handshaker_factory.c
   - src/core/lib/channel/handshaker_registry.c
   - src/core/lib/compression/compression.c
+  - src/core/lib/compression/compression_internal.c
   - src/core/lib/compression/message_compress.c
   - src/core/lib/compression/stream_compression.c
   - src/core/lib/debug/stats.c
@@ -344,6 +345,7 @@
   - src/core/lib/channel/handshaker_factory.h
   - src/core/lib/channel/handshaker_registry.h
   - src/core/lib/compression/algorithm_metadata.h
+  - src/core/lib/compression/compression_internal.h
   - src/core/lib/compression/message_compress.h
   - src/core/lib/compression/stream_compression.h
   - src/core/lib/debug/stats.h