GitLab

Adding a new feature flag to allow enabling the WebShare functionality
on the platforms (OS and Chrome OS) where it is being actively
developed.

http://crbug.com/1035527

Change-Id: I5cd9274457c86c957360ff7e6a0b61f1c474e124
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2357091Reviewed-by: Eric Willigers <ericwilligers@chromium.org>
Commit-Queue: Hoch Hochkeppel <mhochk@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#798717}