[Autofill] Include pattern for *.typemap in OWNERS

The pattern for *.typemap is missing in OWNERS. It causes warnings for CLs that change autofill_types.typemap

Review-Url: https://codereview.chromium.org/2755913002
Cr-Commit-Position: refs/heads/master@{#457420}

components/autofill/content/common/OWNERS

@@ -2,6 +2,8 @@
 # new sandbox escapes.
 per-file *.mojom=set noparent
 per-file *.mojom=file://ipc/SECURITY_OWNERS
+per-file *.typemap=set noparent
+per-file *.typemap=file://ipc/SECURITY_OWNERS
 per-file *_struct_traits*.*=set noparent
 per-file *_struct_traits*.*=file://ipc/SECURITY_OWNERS
 per-file *_message*.*=set noparent