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