GitLab

When ClipboardHistory tries to check whether clipboard
data read is allowed, no notification should be shown
because this action isn't triggered by the user.

Bug: 
Change-Id: If9d82fb92660a322c35a276454ff0d6be1a7fcda
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2514212Reviewed-by: David Black <dmblack@google.com>
Commit-Queue: Aya Elsayed <ayaelattar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824064}