Guard native notification code under ENABLE_NATIVE_NOTIFICATIONS guards

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index d52f7355119297e2b95d40f09d3b034f4e81b4cd..d63b23ef8dcf7bdb520aeff97cff1dc7c52db92b 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -1528,11 +1528,11 @@ const FeatureEntry kFeatureEntries[] = {
     {"translate-lang-by-ulp", flag_descriptions::kTranslateLanguageByUlpName,
      flag_descriptions::kTranslateLanguageByUlpDescription, kOsAll,
      FEATURE_VALUE_TYPE(translate::kTranslateLanguageByULP)},
-#if defined(OS_MACOSX) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
+#if BUILDFLAG(ENABLE_NATIVE_NOTIFICATIONS)
     {"enable-native-notifications", flag_descriptions::kNotificationsNativeFlag,
      flag_descriptions::kNotificationsNativeFlagDescription, kOsMac | kOsLinux,
      FEATURE_VALUE_TYPE(features::kNativeNotifications)},
-#endif  // defined(OS_MACOSX) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
+#endif  // ENABLE_NATIVE_NOTIFICATIONS
 #if defined(TOOLKIT_VIEWS)
     {"disable-views-rect-based-targeting",
      flag_descriptions::kViewsRectBasedTargetingName,