Re-enable <input pattern> tests

9fcebbe1b25bd4ac2a51aef552e43f15f7850817 temporarily disabled these
tests in preparation for shipping RegExp Unicode property escapes in
V8.

Now that Unicode property escapes have shipped, the test expectations
can be updated accordingly, and the tests can be re-enabled.

BUG=v8:4743

Change-Id: I6fc3add3692dd1da7da59b83704b98db415fcd8e
Reviewed-on: https://chromium-review.googlesource.com/765368
Reviewed-by: Peter Beverloo <peter@chromium.org>
Commit-Queue: Mathias Bynens <mathias@chromium.org>
Cr-Commit-Position: refs/heads/master@{#516266}
2 files changed