fixed dependency problem in grpc_cronet by adding dep on chttp2
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 893c541..e8a75d3 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -4075,6 +4075,7 @@
     "deps": [
       "gpr", 
       "grpc_base", 
+      "grpc_transport_chttp2_client_secure", 
       "grpc_transport_cronet_client_secure"
     ], 
     "headers": [],