Merge "Add a generic error message for missing vendor error strings." into sc-dev am: 922fe0da am: 8059de7f am: c11e005d

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

Change-Id: I498cf4df5a5de05ccad384d875e199cbec349ebd