GitLab

Modify AccessibilityPanel sizing to be more flexible, and work for
both the ChromeVox panel and the SwitchAccess context menu.

Also fixes a bug where ChromeVox Panel fullscreen goes offscreen when
Docked Magnifier is enabled.

Bug: 864796
Change-Id: Ib99150f68dcb332aa86a0cc72d7863d6e6b301f7
Reviewed-on: https://chromium-review.googlesource.com/1167886
Commit-Queue: Zach Helfinstein <zhelfins@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: David Tseng <dtseng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583132}