Remove another GetBlockingPool use in nacl.

BUG=667892
R=bbudge@chromium.org,gab@chromium.org

Change-Id: I589b1ad14e14bfdf6824a14bc9ed8aa83662cd83
Reviewed-on: https://chromium-review.googlesource.com/609452
Commit-Queue: Brad Nelson <bradnelson@chromium.org>
Reviewed-by: Gabriel Charette <gab@chromium.org>
Cr-Commit-Position: refs/heads/master@{#493388}
1 file changed