[gclient] _Capture to optionally not strip output.
[gclient] _Capture to optionally not strip output.

BUG=693030

Change-Id: Ic85a989fc68ec171bfef6b12dfc8b68cf2c5b77c
Reviewed-on: https://chromium-review.googlesource.com/444156
Reviewed-by: Aaron Gable <bbed39beedae4cdb499af742d2fcd6c63934d93b@chromium.org>
Reviewed-by: Sergey Berezin <002a79d3522c3eaf360691f06af29425bafc4480@chromium.org>
Commit-Queue: Robbie Iannucci <40f3d43a28ebae3cb819288542e1c84d73d962d5@chromium.org>

CoherentLabs/depot_tools,CoherentLabs/depot_tools