Revert "android: Disable thinlto for a while."

This reverts commit 03413ba55a594a376d294a3d5efc8363c6ab1207.

Reason for revert: This should work again, see https://crbug.com/960881

Original change's description:
> android: Disable thinlto for a while.
> 
> A recent lld roll broke how lld interacts with our resource whitelist
> generation hack.  This seems to only happen when thinlto is enabled,
> so turn it off until we have a real fix.
> 
> This will increase binary size while it's in, but we should have
> a fix in time of the next branch.
> 
> Binary-Size: 1.6MB apk size regression expected, will recover when we turn this back on
> Bug: 960881,960255
> Change-Id: I9211a804b63908d20fa30742d608f2d1495ffc38
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1601554
> Commit-Queue: Nico Weber <thakis@chromium.org>
> Commit-Queue: Peter Collingbourne <pcc@chromium.org>
> Auto-Submit: Nico Weber <thakis@chromium.org>
> Reviewed-by: Peter Collingbourne <pcc@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#657862}

TBR=thakis@chromium.org,pcc@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 960881, 960255
Change-Id: Ia3f2f0d58f1a620b58fc63775eaf026a475f2146
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1619844
Reviewed-by: Nico Weber <thakis@chromium.org>
Reviewed-by: Peter Collingbourne <pcc@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#661419}
1 file changed