diff --git a/BUILD.gn b/BUILD.gn.new

index 28c2255..7f89fe6 100644

--- a/build/config/compiler/BUILD.gn

+++ b/build/config/compiler/BUILD.gn

@@ -727,13 +727,6 @@ config("compiler") {

       ldflags += [ "-Wl,-mllvm,-import-instr-limit=$import_instr_limit" ]

-      if (!is_chromeos) {

-        # TODO(https://crbug.com/972449): turn on for ChromeOS when that

-        # toolchain has this flag.

-        # We only use one version of LLVM within a build so there's no need to

-        # upgrade debug info, which can be expensive since it runs the verifier.

-        ldflags += [ "-Wl,-mllvm,-disable-auto-upgrade-debug-info" ]

-      }

     }

     # TODO(https://crbug.com/1211155): investigate why this isn't effective on

​