Inline trivial accessors in accessibility_controller

Bug: None
Change-Id: I9ffe55a11ba54c6c56694b166b762254cc19d4c1
Reviewed-on: https://chromium-review.googlesource.com/c/1355919
Reviewed-by: David Tseng <dtseng@chromium.org>
Reviewed-by: James Cook <jamescook@chromium.org>
Commit-Queue: Anastasia Helfinstein <anastasi@google.com>
Cr-Commit-Position: refs/heads/master@{#613274}
33 files changed