flags: assign enable-accessibility-tab-switcher

Bug: 961861
Change-Id: I0c7acb675944f44d63c447cac983b21a6331cf23
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1609880
Auto-Submit: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: David Trainor <dtrainor@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#659174}

chrome/browser/flag-metadata.json

@@ -665,7 +665,7 @@
   },
   {
     "name": "enable-accessibility-tab-switcher",
-    // "owners": [ "your-team" ],
+    "owners": [ "dtrainor", "mdjones" ],
     "expiry_milestone": 76
   },
   {