sqlite: Upgrade from 3.17 to 3.20.

Bug: 746653
Change-Id: I5ce0bfb68527968feff3da5e034dee78163f36b3
Reviewed-on: https://chromium-review.googlesource.com/578988
Commit-Queue: Victor Costan <pwnall@chromium.org>
Reviewed-by: Chris Mumford <cmumford@chromium.org>
Reviewed-by: Joshua Bell <jsbell@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#488493}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: ac20cda595c9955b20d015f6605ffeaa7cf00ec6
420 files changed