Add myself to Accessibility Watchlist.

NOTRY=true

Change-Id: Id899ab8d308147251b2d97106e18da5a10877741
Reviewed-on: https://chromium-review.googlesource.com/c/1477347
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: Dominic Mazzoni <dmazzoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#633529}

WATCHLISTS

@@ -1787,6 +1787,7 @@
     'accelerator_table': ['derat+watch@chromium.org',
                           'yusukes+watch@chromium.org'],
     'accessibility': ['aboxhall+watch@chromium.org',
+                      'akihiroota@chromium.org',
                       'aleventhal+watch@chromium.org',
                       'dmazzoni+watch@chromium.org',
                       'dougt+watch@chromium.org',