Roll src/third_party/depot_tools 6a5cb2517a2c..69b63c9f97d0 (1 commits)

https://chromium.googlesource.com/chromium/tools/depot_tools.git/+log/6a5cb2517a2c..69b63c9f97d0

git log 6a5cb2517a2c..69b63c9f97d0 --date=short --no-merges --format='%ad %ae %s'
2019-09-25 pwnall@chromium.org Fix sys.platform mapping in download_from_google_storage.py.

Created with:
  gclient setdep -r src/third_party/depot_tools@69b63c9f97d0

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/depot-tools-chromium-autoroll
Please CC agable@chromium.org on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

TBR=agable@chromium.org

Bug: chromium:1007872
Change-Id: I44a40fad86d62e9822a640bf394a2e20c63c7578
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1825625


Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#699978}