Merge "Add a Bazel BUILD file for error_prone." am: 379e6e4186 am: a972588174 am: 956c52a90a

Original change: https://android-review.googlesource.com/c/platform/external/error_prone/+/1822072

Change-Id: Id7ce1e5ecb39c9f4601d51a0a00bfeb19d06986d