Introduce `--incompatible_disallow_filetype` to remove the `FileType` function.

RELNOTES:
  `FileType` is deprecated and will be removed soon.
  Try the `--incompatible_disallow_filetype` flag to ensure your code
  is forward-compatible.
PiperOrigin-RevId: 192758063
diff --git a/src/test/java/com/google/devtools/build/lib/packages/SkylarkSemanticsConsistencyTest.java b/src/test/java/com/google/devtools/build/lib/packages/SkylarkSemanticsConsistencyTest.java
index 057a7b7..569f3c3 100644
--- a/src/test/java/com/google/devtools/build/lib/packages/SkylarkSemanticsConsistencyTest.java
+++ b/src/test/java/com/google/devtools/build/lib/packages/SkylarkSemanticsConsistencyTest.java
@@ -125,6 +125,7 @@
         "--incompatible_disable_glob_tracking=" + rand.nextBoolean(),
         "--incompatible_disable_objc_provider_resources=" + rand.nextBoolean(),
         "--incompatible_disallow_dict_plus=" + rand.nextBoolean(),
+        "--incompatible_disallow_filetype=" + rand.nextBoolean(),
         "--incompatible_disallow_old_style_args_add=" + rand.nextBoolean(),
         "--incompatible_disallow_slash_operator=" + rand.nextBoolean(),
         "--incompatible_new_actions_api=" + rand.nextBoolean(),
@@ -148,6 +149,7 @@
         .incompatibleDisableGlobTracking(rand.nextBoolean())
         .incompatibleDisableObjcProviderResources(rand.nextBoolean())
         .incompatibleDisallowDictPlus(rand.nextBoolean())
+        .incompatibleDisallowFileType(rand.nextBoolean())
         .incompatibleDisallowOldStyleArgsAdd(rand.nextBoolean())
         .incompatibleDisallowSlashOperator(rand.nextBoolean())
         .incompatibleNewActionsApi(rand.nextBoolean())