ChromeVox: For popUpButton switch value/name spoken order

-Read the name of the popUpButton before the value to give the user
 better context.

Change-Id: I824f3382df5164cf03e24941d678d575b9baaf5e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1919525Reviewed-by: David Tseng <dtseng@chromium.org>
Commit-Queue: Gavin Williams <gavinwill@chromium.org>
Cr-Commit-Position: refs/heads/master@{#716436}

chrome/browser/resources/chromeos/chromevox/background/output.js

@@ -525,7 +525,7 @@ Output.RULES = {
     },
     paragraph: {speak: `$nameOrDescendants`},
     popUpButton: {
-      speak: `$if($value, $value, $descendants) $name $role @aria_has_popup
+      speak: `$name $if($value, $value, $descendants) $role @aria_has_popup
           $if($expanded, @@list_with_items($setSize)) $state $restriction
           $description`
     },