Add self as owner of chrome.hid and //services/device

BUG=890096

Change-Id: I08bc0e42416e0dfd7e1c9409746f058b9dc1e767
Reviewed-on: https://chromium-review.googlesource.com/c/1318080Reviewed-by: Reilly Grant <reillyg@chromium.org>
Commit-Queue: Matt Reynolds <mattreynolds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605400}

extensions/browser/api/hid/OWNERS

+mattreynolds@chromium.org
 reillyg@chromium.org
 rockot@google.com
 
-# COMPONENT: Platform>Extensions>API
\ No newline at end of file
+# COMPONENT: Platform>Extensions>API

services/device/OWNERS

 # TEAM: device-dev@chromium.org
 
 blundell@chromium.org
+mattreynolds@chromium.org
 reillyg@chromium.org
 rockot@google.com