Add license_note

Comments not preserved during refresh.

Bug: 68860345

Test: m nothing
Change-Id: I77a11bc6d0f5bef32fbeb1567ac630c6c78278e2
diff --git a/METADATA b/METADATA
index e29c846..9955676 100644
--- a/METADATA
+++ b/METADATA
@@ -1,3 +1,6 @@
+# *** THIS PACKAGE HAS SPECIAL LICENSING CONDITIONS.  PLEASE
+#     CONSULT THE OWNERS AND opensource-licensing@google.com BEFORE
+#     DEPENDING ON IT IN YOUR PROJECT. ***
 name: "Barlow"
 description:
     ""
@@ -9,5 +12,6 @@
   }
   version: "5e7584f1a52d52ca01726c709af071fd5e053325"
   last_upgrade_date { year: 2020 month: 3 day: 4 }
+  license_note: "contains OFL fonts"
   license_type: BY_EXCEPTION_ONLY
-}
\ No newline at end of file
+}