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This change enables the WebAuthN M70 Features "WebAuthenticationUI",
"WebAuthenticationTouchId" and "WebAuthenticationCableWin" by default.

Relevant Launch Bugs:
- TouchId: https://crbug.com/837392
- UI and CableWin: https://crbug.com/873195

TBR=jochen@chromium.org

Bug: NONE
Change-Id: I3693fbd28c0b11978a045c7fa9f68c9e4995c1a0
Reviewed-on: https://chromium-review.googlesource.com/c/1288795
Commit-Queue: Jan Wilken Dörrie <jdoerrie@chromium.org>
Reviewed-by: Kim Paulhamus <kpaulhamus@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600862}