Store lower cased tag names withing webaccessibility.

chrome/browser/browser_accessibility_win.cc

 // Copyright (c) 2010 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 "chrome/browser/browser_accessibility_win.h"
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_accessibility_manager_win.h"
@@ skipping 1156 matching lines @@
       role_ = ROLE_SYSTEM_TEXT;
       ia2_state_ |= IA2_STATE_SINGLE_LINE;
       ia2_state_ |= IA2_STATE_EDITABLE;
       break;
     case WebAccessibility::ROLE_GRID:
       role_ = ROLE_SYSTEM_TABLE;
       break;
     case WebAccessibility::ROLE_GROUP:
       GetAttribute(WebAccessibility::ATTR_HTML_TAG, &role_name_);
       if (role_name_.empty())
-        role_name_ = L"DIV";
+        role_name_ = L"div";
       ia2_role_ = IA2_ROLE_SECTION;
       break;
     case WebAccessibility::ROLE_HEADING:
       GetAttribute(WebAccessibility::ATTR_HTML_TAG, &role_name_);
       ia2_role_ = IA2_ROLE_HEADING;
       break;
     case WebAccessibility::ROLE_IMAGE:
       role_ = ROLE_SYSTEM_GRAPHIC;
       break;
     case WebAccessibility::ROLE_IMAGE_MAP:
@@ skipping 170 matching lines @@
   }
 
   // The role should always be set.
   DCHECK(!role_name_.empty() || role_);
 
   // If we didn't explicitly set the IAccessible2 role, make it the same
   // as the MSAA role.
   if (!ia2_role_)
     ia2_role_ = role_;
 }