A11y: Add/refactor methods for manipulating bitfields on AXNodeData.

content/browser/accessibility/browser_accessibility_manager_auralinux.cc

 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/accessibility/browser_accessibility_manager_auralinux.h"
 
 #include "content/browser/accessibility/browser_accessibility_auralinux.h"
 #include "content/common/accessibility_messages.h"
 
 namespace content {
@@ skipping 24 matching lines @@
 
 BrowserAccessibilityManagerAuraLinux::~BrowserAccessibilityManagerAuraLinux() {
 }
 
 // static
 ui::AXTreeUpdate
     BrowserAccessibilityManagerAuraLinux::GetEmptyDocument() {
   ui::AXNodeData empty_document;
   empty_document.id = 0;
   empty_document.role = ui::AX_ROLE_ROOT_WEB_AREA;
-  empty_document.state = 1 << ui::AX_STATE_READ_ONLY;
+  empty_document.AddState(ui::AX_STATE_READ_ONLY);
   ui::AXTreeUpdate update;
   update.root_id = empty_document.id;
   update.nodes.push_back(empty_document);
   return update;
 }
 
 void BrowserAccessibilityManagerAuraLinux::NotifyAccessibilityEvent(
     BrowserAccessibilityEvent::Source source,
     ui::AXEvent event_type,
     BrowserAccessibility* node) {
   // TODO(shreeram.k) : Implement.
 }
 
 }  // namespace content