Rewrite renderer accessibility to not use WebAccessibilityCache.

content/browser/accessibility/browser_accessibility_cocoa.mm

 // 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 <execinfo.h>
 
 #import "content/browser/accessibility/browser_accessibility_cocoa.h"
 
 #include <map>
 
@@ skipping 32 matching lines @@
   WebAccessibility::Role webKitValue;
   NSString* nativeValue;
 };
 
 struct AttributeToMethodNameEntry {
   NSString* attribute;
   NSString* methodName;
 };
 
 static const MapEntry roles[] = {
-  { WebAccessibility::ROLE_NONE, NSAccessibilityUnknownRole },
   { WebAccessibility::ROLE_ALERT, NSAccessibilityGroupRole },
   { WebAccessibility::ROLE_ALERT_DIALOG, NSAccessibilityGroupRole },
   { WebAccessibility::ROLE_ANNOTATION, NSAccessibilityUnknownRole },
   { WebAccessibility::ROLE_APPLICATION, NSAccessibilityGroupRole },
   { WebAccessibility::ROLE_ARTICLE, NSAccessibilityGroupRole },
   { WebAccessibility::ROLE_BROWSER, NSAccessibilityBrowserRole },
   { WebAccessibility::ROLE_BUSY_INDICATOR, NSAccessibilityBusyIndicatorRole },
   { WebAccessibility::ROLE_BUTTON, NSAccessibilityButtonRole },
   { WebAccessibility::ROLE_CELL, @"AXCell" },
   { WebAccessibility::ROLE_CHECKBOX, NSAccessibilityCheckBoxRole },
@@ skipping 43 matching lines @@
   { WebAccessibility::ROLE_MENU_LIST_OPTION, NSAccessibilityMenuItemRole },
   { WebAccessibility::ROLE_MENU_LIST_POPUP, NSAccessibilityUnknownRole },
   { WebAccessibility::ROLE_NOTE, NSAccessibilityGroupRole },
   { WebAccessibility::ROLE_OUTLINE, NSAccessibilityOutlineRole },
   { WebAccessibility::ROLE_POPUP_BUTTON, NSAccessibilityPopUpButtonRole },
   { WebAccessibility::ROLE_PROGRESS_INDICATOR,
       NSAccessibilityProgressIndicatorRole },
   { WebAccessibility::ROLE_RADIO_BUTTON, NSAccessibilityRadioButtonRole },
   { WebAccessibility::ROLE_RADIO_GROUP, NSAccessibilityRadioGroupRole },
   { WebAccessibility::ROLE_REGION, NSAccessibilityGroupRole },
+  { WebAccessibility::ROLE_ROOT_WEB_AREA, @"AXWebArea" },
   { WebAccessibility::ROLE_ROW, NSAccessibilityRowRole },
   { WebAccessibility::ROLE_ROW_HEADER, @"AXCell" },
   { WebAccessibility::ROLE_RULER, NSAccessibilityRulerRole },
   { WebAccessibility::ROLE_RULER_MARKER, NSAccessibilityRulerMarkerRole },
   // TODO(dtseng): we don't correctly support the attributes for these roles.
   // { WebAccessibility::ROLE_SCROLLAREA, NSAccessibilityScrollAreaRole },
   // { WebAccessibility::ROLE_SCROLLBAR, NSAccessibilityScrollBarRole },
   { WebAccessibility::ROLE_SHEET, NSAccessibilitySheetRole },
   { WebAccessibility::ROLE_SLIDER, NSAccessibilitySliderRole },
   { WebAccessibility::ROLE_SLIDER_THUMB, NSAccessibilityGroupRole },
@@ skipping 716 matching lines @@
     return [super hash];
   return browserAccessibility_->renderer_id();
 }
 
 - (BOOL)accessibilityShouldUseUniqueId {
   return YES;
 }
 
 @end