Adding CHECKED_OUT_VERSION in test/simdjs so that
the bots don't revert and redownload each time.
LOG=N
BUG=None
TEST=None
R=littledan@chromium.org,machenbach@chromium.org
Review URL: https://codereview.chromium.org/
1242863003
Cr-Commit-Position: refs/heads/master@{#29826}
/test/promises-aplus/promises-tests
/test/promises-aplus/promises-tests.tar.gz
/test/promises-aplus/sinon
+/test/simdjs/CHECKED_OUT_*
/test/simdjs/ecmascript_simd*
/test/simdjs/data*
/test/test262/data