Add Dawn got_revision_mapping to glient config
Add Dawn got_revision_mapping to glient config

BUG=875245

Change-Id: I50425aef624d00c1aa6fd7c18244fea128c15842
Reviewed-on: https://chromium-review.googlesource.com/1209643
Commit-Queue: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@chromium.org>
Reviewed-by: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@chromium.org>

CoherentLabs/depot_tools,CoherentLabs/depot_tools