Revert "android: disable ThinLTO for official builds"

This reverts commit 4f7e1019a72eac00eb343baa4b0c5887c546ec23.

Reason for revert: x86 ThinLTO should work after the latest clang roll.

Original change's description:
> android: disable ThinLTO for official builds
> 
> This is a workaround for an apparently broken compiler roll, which is
> blocking Clank canary releases. It should be reverted before we branch
> for 77.
> 
> Bug: 973431
> Binary-Size: ThinLTO saves us binary size. This is a workaround.
> Change-Id: Id08e12acbc4a64a83d476139713d2da3fece3a62
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1661128
> Commit-Queue: George Burgess <gbiv@chromium.org>
> Reviewed-by: Nico Weber <thakis@chromium.org>
> Reviewed-by: Dirk Pranke <dpranke@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#669438}

TBR=thakis@chromium.org,dpranke@chromium.org,gbiv@chromium.org

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

Bug: 973431
Change-Id: I34df7b57b25da2ab84e198fcb0438a8d82e82d66
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1699367
Reviewed-by: Reid Kleckner <rnk@chromium.org>
Reviewed-by: George Burgess <gbiv@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Reid Kleckner <rnk@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#676719}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: ab3090fbdbcbc855f9c57fabcaff26cb9bdf2b62
1 file changed