Update comment re GetTouchSelectionControllerClientManager().

The associated bug was closed a long time ago, so updating the
comment is long overdue.

TBR=nasko@chromium.org

Bug: 470662
Change-Id: I510b1a51f32f2e11291ddede7c20328558eafc4b
Reviewed-on: https://chromium-review.googlesource.com/c/1456939
Reviewed-by: James MacLean <wjmaclean@chromium.org>
Reviewed-by: Nasko Oskov <nasko@chromium.org>
Commit-Queue: James MacLean <wjmaclean@chromium.org>
Cr-Commit-Position: refs/heads/master@{#629821}
1 file changed