Add Wacom to AUTHORS file

Change-Id: Ic5fee6c7c1c14a2d330c0290156eb3132afce82d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2868017
Reviewed-by: Harry Cutts <hcutts@chromium.org>
Commit-Queue: Harry Cutts <hcutts@chromium.org>
Cr-Commit-Position: refs/heads/master@{#878510}

AUTHORS

@@ -1277,6 +1277,7 @@ Upwork <*@cloud.upwork.com>
 Venture 3 Systems LLC <*@venture3systems.com>
 Vewd Software AS <*@vewd.com>
 Vivaldi Technologies AS <*@vivaldi.com>
+Wacom <*@wacom.com>
 Yandex LLC <*@yandex-team.ru>
 # Please DO NOT APPEND here. See comments at the top of the file.
 # END organizations section.