Revert D90144796: Remove the legacy no_metadata option from users codebase

Differential Revision:
D90144796

Original commit changeset: e09d5e384ab4

Original Phabricator Diff: D90144796

fbshipit-source-id: 40f16eeab6ec077f9e03539ed3def55d82cb1db5

Author: generatedunixname89002005232357

third-party/thrift/src/thrift/compiler/generate/t_mstch_cpp2_generator.cc

@@ -2672,7 +2672,9 @@ void t_mstch_cpp2_generator::generate_metadata(const t_program* program) {
   const auto& prog = cached_program(program);
 
   render_to_file(prog, "module_metadata.h", name + "_metadata.h");
-  render_to_file(prog, "module_metadata.cpp", name + "_metadata.cpp");
+  if (!has_option("no_metadata")) {
+    render_to_file(prog, "module_metadata.cpp", name + "_metadata.cpp");
+  }
 }
 
 void t_mstch_cpp2_generator::generate_sinit(const t_program* program) {

third-party/thrift/src/thrift/compiler/test/fixtures/no_metadata/cmd

@@ -0,0 +1 @@
+cpp2: mstch_cpp2:no_metadata src/module.thrift