replaced header list with filegroup in build.yaml.
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 6435840..8d0345d 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -6285,116 +6285,19 @@
     "type": "filegroup"
   }, 
   {
-    "deps": [], 
+    "deps": [
+      "grpc_base", 
+      "grpc_transport_chttp2"
+    ], 
     "headers": [
-      "include/grpc/byte_buffer.h", 
-      "include/grpc/grpc.h", 
-      "include/grpc/impl/codegen/alloc.h", 
-      "include/grpc/impl/codegen/atm.h", 
-      "include/grpc/impl/codegen/atm_gcc_atomic.h", 
-      "include/grpc/impl/codegen/atm_gcc_sync.h", 
-      "include/grpc/impl/codegen/atm_win32.h", 
-      "include/grpc/impl/codegen/byte_buffer.h", 
-      "include/grpc/impl/codegen/compression_types.h", 
-      "include/grpc/impl/codegen/connectivity_state.h", 
-      "include/grpc/impl/codegen/grpc_types.h", 
-      "include/grpc/impl/codegen/log.h", 
-      "include/grpc/impl/codegen/port_platform.h", 
-      "include/grpc/impl/codegen/propagation_bits.h", 
-      "include/grpc/impl/codegen/slice.h", 
-      "include/grpc/impl/codegen/slice_buffer.h", 
-      "include/grpc/impl/codegen/status.h", 
-      "include/grpc/impl/codegen/sync.h", 
-      "include/grpc/impl/codegen/sync_generic.h", 
-      "include/grpc/impl/codegen/sync_posix.h", 
-      "include/grpc/impl/codegen/sync_win32.h", 
-      "include/grpc/impl/codegen/time.h", 
-      "include/grpc/status.h", 
-      "include/grpc/support/alloc.h", 
-      "include/grpc/support/atm.h", 
-      "include/grpc/support/host_port.h", 
-      "include/grpc/support/log.h", 
-      "include/grpc/support/port_platform.h", 
-      "include/grpc/support/slice.h", 
-      "include/grpc/support/slice_buffer.h", 
-      "include/grpc/support/string_util.h", 
-      "include/grpc/support/sync.h", 
-      "include/grpc/support/time.h", 
-      "include/grpc/support/useful.h", 
-      "src/core/ext/transport/chttp2/transport/incoming_metadata.h", 
-      "src/core/lib/channel/channel_stack.h", 
-      "src/core/lib/channel/context.h", 
-      "src/core/lib/debug/trace.h", 
-      "src/core/lib/iomgr/closure.h", 
-      "src/core/lib/iomgr/exec_ctx.h", 
-      "src/core/lib/iomgr/pollset.h", 
-      "src/core/lib/iomgr/pollset_set.h", 
-      "src/core/lib/support/string.h", 
-      "src/core/lib/surface/channel.h", 
-      "src/core/lib/surface/channel_stack_type.h", 
-      "src/core/lib/transport/byte_stream.h", 
-      "src/core/lib/transport/metadata.h", 
-      "src/core/lib/transport/metadata_batch.h", 
-      "src/core/lib/transport/transport.h", 
-      "src/core/lib/transport/transport_impl.h", 
       "third_party/objective_c/Cronet/cronet_c_for_grpc.h"
     ], 
     "language": "c", 
     "name": "grpc_transport_cronet_client_secure", 
     "src": [
-      "include/grpc/byte_buffer.h", 
-      "include/grpc/grpc.h", 
-      "include/grpc/impl/codegen/alloc.h", 
-      "include/grpc/impl/codegen/atm.h", 
-      "include/grpc/impl/codegen/atm_gcc_atomic.h", 
-      "include/grpc/impl/codegen/atm_gcc_sync.h", 
-      "include/grpc/impl/codegen/atm_win32.h", 
-      "include/grpc/impl/codegen/byte_buffer.h", 
-      "include/grpc/impl/codegen/compression_types.h", 
-      "include/grpc/impl/codegen/connectivity_state.h", 
-      "include/grpc/impl/codegen/grpc_types.h", 
-      "include/grpc/impl/codegen/log.h", 
-      "include/grpc/impl/codegen/port_platform.h", 
-      "include/grpc/impl/codegen/propagation_bits.h", 
-      "include/grpc/impl/codegen/slice.h", 
-      "include/grpc/impl/codegen/slice_buffer.h", 
-      "include/grpc/impl/codegen/status.h", 
-      "include/grpc/impl/codegen/sync.h", 
-      "include/grpc/impl/codegen/sync_generic.h", 
-      "include/grpc/impl/codegen/sync_posix.h", 
-      "include/grpc/impl/codegen/sync_win32.h", 
-      "include/grpc/impl/codegen/time.h", 
-      "include/grpc/status.h", 
-      "include/grpc/support/alloc.h", 
-      "include/grpc/support/atm.h", 
-      "include/grpc/support/host_port.h", 
-      "include/grpc/support/log.h", 
-      "include/grpc/support/port_platform.h", 
-      "include/grpc/support/slice.h", 
-      "include/grpc/support/slice_buffer.h", 
-      "include/grpc/support/string_util.h", 
-      "include/grpc/support/sync.h", 
-      "include/grpc/support/time.h", 
-      "include/grpc/support/useful.h", 
-      "src/core/ext/transport/chttp2/transport/incoming_metadata.h", 
       "src/core/ext/transport/cronet/client/secure/cronet_channel_create.c", 
       "src/core/ext/transport/cronet/transport/cronet_api_dummy.c", 
-      "src/core/ext/transport/cronet/transport/cronet_transport.c", 
-      "src/core/lib/channel/channel_stack.h", 
-      "src/core/lib/channel/context.h", 
-      "src/core/lib/debug/trace.h", 
-      "src/core/lib/iomgr/closure.h", 
-      "src/core/lib/iomgr/exec_ctx.h", 
-      "src/core/lib/iomgr/pollset.h", 
-      "src/core/lib/iomgr/pollset_set.h", 
-      "src/core/lib/support/string.h", 
-      "src/core/lib/surface/channel.h", 
-      "src/core/lib/surface/channel_stack_type.h", 
-      "src/core/lib/transport/byte_stream.h", 
-      "src/core/lib/transport/metadata.h", 
-      "src/core/lib/transport/metadata_batch.h", 
-      "src/core/lib/transport/transport.h", 
-      "src/core/lib/transport/transport_impl.h"
+      "src/core/ext/transport/cronet/transport/cronet_transport.c"
     ], 
     "third_party": false, 
     "type": "filegroup"