tree a71a2b1f8afaa554e0673ae987644a5e901290e8
parent 9323cc621973d76a7446bc1abbb88cf5637b99cc
author Gabe Black <gabeblack@chromium.org> 1443042479 -0700
committer chrome-bot <chrome-bot@chromium.org> 1444342952 -0700

Update devserver to support downloader other than from Google Storage

Main changes:
1. Restructure artifact wrappers to support both CrOS and Android artifacts.
2. Support different downloaders in devserver.py.
3. Add LaunchControlDownloader class, the functions are to be implemented.

BUG=chromium:512668
TEST=run_unittests, devserver_integration_test.py, guado_moblab (au and dummy)
cros flash and cros stage to guado moblab

Change-Id: Ia350b00a2a5ceaeff6d922600dc84c8fc7295ef9
Reviewed-on: https://chromium-review.googlesource.com/301992
Commit-Ready: Dan Shi <dshi@chromium.org>
Tested-by: Dan Shi <dshi@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>