Merge "Add a generic error message for missing vendor error strings." into sc-dev am: 922fe0da54 am: 8059de7fdb am: c11e005db5 am: e3f01e7ea3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15564960

Change-Id: I0459a3d36c9b5fba94c5d5846fd36ff526139f70