Ran generate_projects.sh.
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index bca5652a..37e4ad3 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -867,6 +867,7 @@
include/grpc/impl/codegen/compression_types.h \
include/grpc/impl/codegen/connectivity_state.h \
include/grpc/impl/codegen/exec_ctx_fwd.h \
+include/grpc/impl/codegen/gpr_slice.h \
include/grpc/impl/codegen/gpr_types.h \
include/grpc/impl/codegen/grpc_types.h \
include/grpc/impl/codegen/port_platform.h \