Run upload_to_google_storage.py with Python 3
Run upload_to_google_storage.py with Python 3

Change-Id: I7271280deb09c9675567f3dd255e809da19619b7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3484977
Auto-Submit: David Benjamin <348b1b6801801c3d890b2e1589a8e36441d09fdc@chromium.org>
Reviewed-by: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org>
Commit-Queue: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org>

CoherentLabs/depot_tools,CoherentLabs/depot_tools