Remove TrustedEventsDefaultAction runtime flag.

The FileManager tests have been rewritten to use browser side injection.
This feature can now be removed.

Change-Id: If9780de594d26c93f6f80ee2adf558ff5811df98
Reviewed-on: https://chromium-review.googlesource.com/c/1473404
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Reviewed-by: Navid Zolghadr <nzolghadr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#633775}
2 files changed