DEPS: Invoke play services hook with vpython
DEPS: Invoke play services hook with vpython

Otherwise it will inherit the empty python venv.

Bug: 869249
TBR: fbarchard
Change-Id: Ib77d116863f44f482b2cd7cbfaf71966ce2b7629
Reviewed-on: https://chromium-review.googlesource.com/1157535
Reviewed-by: Ryan Tseng <2190fe9a39b4920ec7bd59c848ec5cccd163056f@chromium.org>
Commit-Queue: Ryan Tseng <2190fe9a39b4920ec7bd59c848ec5cccd163056f@chromium.org>

lemenkov/libyuv,lemenkov/libyuv,lemenkov/libyuv,lemenkov/libyuv