message: add walk_methods_parallel_simple
  Summary:
  walk_methods_parallel has many somewhat confusing arguments.
  Lower the barrier to entry with a simpler version
diff: @@ -64,3 +64,17 @@ Output walk_methods_parallel(
  };
  return wq.run_all();
  }
  +
  +// The simple version. Call `walker` on all methods in `scope` in parallel.
  +template <class T>
  +void walk_methods_parallel_simple(
  + const T& scope, const std::function<void(DexMethod*)>& walker) {
  + walk_methods_parallel<std::vector<DexClass*>, std::nullptr_t, std::nullptr_t>(
  + scope,
  + [&walker](std::nullptr_t, DexMethod* m) {
  + walker(m);
  + return nullptr;
  + },
  + [](std::nullptr_t, std::nullptr_t) { return nullptr; },
  + [](int) { return nullptr; });
  +}
  