GitLab

This adds a missing AddEventObserver() call in ClipboardX11.

Bug: 1165520
Change-Id: I20335ab29d4b88b0fff70450074e8fcf951a55d4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2631327
Auto-Submit: Lambros Lambrou <lambroslambrou@chromium.org>
Reviewed-by: Erik Jensen <rkjnsn@chromium.org>
Commit-Queue: Lambros Lambrou <lambroslambrou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843829}