GitLab

There's no need for a custom alignment tool now that zipalign supports
page-aligning libraries.

Previously reverted in:
https://codereview.chromium.org/2595233003/

Reason for reland:
Contains fix for monochrome (tested merging locally).

BUG=676029,676589

Review-Url: https://codereview.chromium.org/2612773005
Cr-Commit-Position: refs/heads/master@{#442906}