Vendor projects are proprietary.

Test: m droid dist
Change-Id: I19435feeece687cf7977ea62faac7a9692315449

libwvdrmengine/apex/Android.bp

@@ -18,6 +18,7 @@ package {
     // all of the 'license_kinds' from "vendor_widevine_license"
     // to get the below license kinds:
     //   SPDX-license-identifier-Apache-2.0
+    //   legacy_proprietary (by exception only)
     default_applicable_licenses: ["vendor_widevine_license"],
 }
 
@@ -110,4 +111,4 @@ prebuilt_etc {
     src: "allowlist_com.google.android.widevine.xml",
     vendor: true,
     sub_dir: "sysconfig",
-}
+}