As my mum used to say: When it comes to flushing, later is better than early.

Tentative fix for Android invoke crashers with write protection code
enabled.

Bug: chromium:842862
Change-Id: Ib37115883a6fa615c9514aeb543dc3527335803a
Reviewed-on: https://chromium-review.googlesource.com/1059673Reviewed-by: Hannes Payer <hpayer@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53202}