Less strict checked state changes and introduce disabled state for content

content/browser/accessibility/browser_accessibility_manager_win.cc

 // Copyright (c) 2012 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_win.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <vector>
@@ skipping 48 matching lines @@
   ui::GetIAccessible2UsageObserverList().RemoveObserver(this);
 }
 
 // static
 ui::AXTreeUpdate
     BrowserAccessibilityManagerWin::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_ENABLED) |
-      (1 << ui::AX_STATE_READ_ONLY) |
-      (1 << ui::AX_STATE_BUSY);
+      (1 << ui::AX_STATE_READ_ONLY) | (1 << ui::AX_STATE_BUSY);
 
   ui::AXTreeUpdate update;
   update.root_id = empty_document.id;
   update.nodes.push_back(empty_document);
   return update;
 }
 
 HWND BrowserAccessibilityManagerWin::GetParentHWND() {
   BrowserAccessibilityDelegate* delegate = GetDelegateFromRootManager();
   if (!delegate)
@@ skipping 245 matching lines @@
 
 void BrowserAccessibilityManagerWin::TrackScrollingObject(
     BrowserAccessibilityWin* node) {
   if (tracked_scroll_object_)
     tracked_scroll_object_->Release();
   tracked_scroll_object_ = node;
   tracked_scroll_object_->AddRef();
 }
 
 }  // namespace content