Merge to XFA: Add tests for CBA_AnnotIterator.

Original Review URL: https://codereview.chromium.org/1652533002 .
(cherry picked from commit 1bce5f62f3292a6baf35491bf4c9b4fde2fb73e3)

TBR=thestig@chromium.org

Review URL: https://codereview.chromium.org/1652543003 .

2 files changed, 287 insertions, 0 deletions

diff --git a/testing/resources/annotiter.in b/testing/resources/annotiter.in
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diff --git a/testing/resources/annotiter.pdf b/testing/resources/annotiter.pdf
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