Do TODOs related to Android/libc++ (src changes)

buildtools roll contains this revision:
https://chromium.googlesource.com/chromium/buildtools/+/40194ab03962d8183b2796fa58a39ec8a9e83a41

BUG=767901
R=thakis

Change-Id: I9969eb3338ff5e48187be609c2698ab08af80b67
Reviewed-on: https://chromium-review.googlesource.com/c/1410270
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622716}
2 files changed