WebRTC: Update source-of-truth on 'fetch webrtc'
WebRTC: Update source-of-truth on 'fetch webrtc'

Bug: 751635
Change-Id: I0eaac306d394662d966e416b649414e9adbea048
Reviewed-on: https://chromium-review.googlesource.com/660258
Reviewed-by: Aaron Gable <bbed39beedae4cdb499af742d2fcd6c63934d93b@chromium.org>
Reviewed-by: Henrik Kjellander <60c11d3e646624f25a02b88f51d51ca6b7ff7c72@chromium.org>
Reviewed-by: Andrii Shyshkalov <a30c74fa30536fe7ea81ed6dec202e35e149e1fd@chromium.org>
Commit-Queue: Aaron Gable <bbed39beedae4cdb499af742d2fcd6c63934d93b@chromium.org>

CoherentLabs/depot_tools,CoherentLabs/depot_tools