Use inclusive terminology in arc_accessibility_helper_bridge.cc

Replaces whitelist -> allowlist.

Bug: 842296
Notry: true
Change-Id: I81c2c719378b0e7d0caa83e3dc9b57983ffd0468
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2262118Reviewed-by: Sara Kato <sarakato@chromium.org>
Commit-Queue: Sara Kato <sarakato@chromium.org>
Auto-Submit: Dominic Mazzoni <dmazzoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#781724}

chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.cc

@@ -741,7 +741,7 @@ void ArcAccessibilityHelperBridge::UpdateWindowProperties(
     return;
 
   // Do a lookup for the tree source. A tree source may not exist because the
-  // app isn't whitelisted Android side or no data has been received for the
+  // app isn't allowlisted Android side or no data has been received for the
   // app.
   bool use_talkback = talkback_enabled_task_ids_.count(task_id) > 0;