[bootstrap/win] Canary Python 2.7.15
[bootstrap/win] Canary Python 2.7.15

Bug: 879378
Change-Id: I831319672c80cb7202d057d5d737eefc95ffad97
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1659614
Reviewed-by: Marc-Antoine Ruel <d2bf0fc09b08f7b0888b3ddab32b3e89c7122c8b@chromium.org>
Commit-Queue: smut <95deb7aa15d4c615299e47e7688551456568b1fb@google.com>

CoherentLabs/depot_tools,CoherentLabs/depot_tools