Bug 747270 - Make UtteranceGenerator return string arrays in all generator methods. r=davidb

accessible/src/jsat/Presenters.jsm

@@ -237,7 +237,7 @@ AndroidPresenter.prototype.actionInvoked = function(aObject, aActionName) {
     gecko: {
       type: 'Accessibility:Event',
       eventType: ANDROID_TYPE_VIEW_CLICKED,
-      text: [UtteranceGenerator.genForAction(aObject, aActionName)]
+      text: UtteranceGenerator.genForAction(aObject, aActionName)
     }
   });
 };

accessible/src/jsat/UtteranceGenerator.jsm

@@ -54,7 +54,7 @@ var UtteranceGenerator = {
   },
 
   genForAction: function(aObject, aActionName) {
-    return gStringBundle.GetStringFromName(this.gActionMap[aActionName]);
+    return [gStringBundle.GetStringFromName(this.gActionMap[aActionName])];
   },
 
   verbosityRoleMap: {