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This is a follow on to:
https://chromium-review.googlesource.com/c/chromium/src/+/2505698/

Without this patch, when signed in with history sync enabled,
chrome://history would still show visits from CCT. This patch makes it
so such visits are no longer pushed to sync and won't be
visible in chrome://history.

This is for an experiment, and only enabled for 1 parties if the right
intent extra is provided.

This code is temporary, and will be reverted once data from
experiment has been collected.

BUG=1145208
TEST=TabAndroidBrowserTest.SetHideFutureNavigationsPropagatesToSyncedTabDelegate

Change-Id: I9008ea6c581c7e90737128e4643fd066105cc6dd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2518403Reviewed-by: Ted Choc <tedchoc@chromium.org>
Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823775}