Rewrite renderer accessibility to not use WebAccessibilityCache.

content/browser/accessibility/browser_accessibility_win.cc

 // Copyright (c) 2011 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_win.h"
 
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "content/browser/accessibility/browser_accessibility_manager_win.h"
@@ skipping 2519 matching lines @@
       break;
     case WebAccessibility::ROLE_DIALOG:
       ia_role_ = ROLE_SYSTEM_DIALOG;
       ia_state_|= STATE_SYSTEM_READONLY;
       break;
     case WebAccessibility::ROLE_DISCLOSURE_TRIANGLE:
       ia_role_ = ROLE_SYSTEM_OUTLINEBUTTON;
       ia_state_|= STATE_SYSTEM_READONLY;
       break;
     case WebAccessibility::ROLE_DOCUMENT:
+    case WebAccessibility::ROLE_ROOT_WEB_AREA:
     case WebAccessibility::ROLE_WEB_AREA:
       ia_role_ = ROLE_SYSTEM_DOCUMENT;
       ia_state_|= STATE_SYSTEM_READONLY;
       ia_state_|= STATE_SYSTEM_FOCUSABLE;
       break;
     case WebAccessibility::ROLE_EDITABLE_TEXT:
       ia_role_ = ROLE_SYSTEM_TEXT;
       ia2_state_ |= IA2_STATE_SINGLE_LINE;
       ia2_state_ |= IA2_STATE_EDITABLE;
       break;
@@ skipping 245 matching lines @@
   }
 
   // The role should always be set.
   DCHECK(!role_name_.empty() || ia_role_);
 
   // If we didn't explicitly set the IAccessible2 role, make it the same
   // as the MSAA role.
   if (!ia2_role_)
     ia2_role_ = ia_role_;
 }