Add missing test annotations for Ibdafe89474dd69c5b70c67ec98fed4.

This is a follow up CL for Ibdafe89474dd69c5b70c67ec98fed46656f9f,
which introduced several unit tests with the fix of Bug 21183019
but forgot to add test annotations for new test cases.

This CL makes sure that those newly added tests are annotated with
standard annotations.  Here we use @SmallTest since those test
cases basically checking the behavior only of TextView.

Bug: 21183019
Change-Id: Id6c5950cf8cfc8706e90669c7517f62b1e54f057