tree 3cb47112a06c055a345016a8147a389d930db2b7
parent 81edb35b28419f36597dc5eeffa8a3fcd8fcf091
author Tony Gentilcore <tonyg@chromium.org> 1452550192 -0800
committer Tony Gentilcore <tonyg@chromium.org> 1452550192 -0800

Speed up download_android_tools.py by about a third.

This moves extracting off of the main thread, so that it can be done in
parallel with downloading. On my machine, this goes from about 76s ->
51s. But my motivation is to improve the time this takes on travis
where it's even slower.

BUG=
R=jamesr@chromium.org

Review URL: https://codereview.chromium.org/1574033002 .