Re-enable FirstRunIntegration tests.

Re-enable these tests after change to clear SharedPreferences before each test.
Related cl: https://crrev.com/c/1399542

Change-Id: I4fba9c11cbf2168a924ca867965c92a9046ff36e
Bug: 908174, 902774
Reviewed-on: https://chromium-review.googlesource.com/c/1409821
Commit-Queue: Yun Liu <yliuyliu@google.com>
Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622941}
1 file changed