add a function to get prioritized voices for voicingManager, see #1282

js/accessibility/voicing/voicingManager.js

@@ -195,6 +195,21 @@ class VoicingManager extends Announcer {
     this.voicesChangedEmitter.emit();
   }
 
+  /**
+   * Returns an array of voices where "Google" voices are prioritized. Google voices generally sound the best so they
+   * can be promoted if desired. Returns an array of SpeechSynthesisVoices where "Google" voices are at the top of the
+   * list.
+   * @public
+   */
+  getVoicesWithGooglePrioritized() {
+    assert && assert( this.initialized, 'No voices available until the voicingManager is initialized' );
+    assert && assert( this.voices.length > 0, 'No voices available to provided a prioritized list.' );
+
+    return this.voices.slice( 0 ).sort( ( a, b ) => {
+      return b.name.includes( 'Google' ) ? 1 : -1;
+    } );
+  }
+
   /**
    * Implements announce so the voicingManager can be a source of output for utteranceQueue.
    * @public