Stops using SYSTEM_STATE_INDETERMINATE as it makes radio buttons appear to have a mixed state.

content/renderer/accessibility/blink_ax_enum_conversion.cc

 // Copyright (c) 2013 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/renderer/accessibility/blink_ax_enum_conversion.h"
 
 #include "base/logging.h"
 
 namespace content {
 
@@ skipping 16 matching lines @@
   if (o.isFocused())
     state |= (1 << ui::AX_STATE_FOCUSED);
 
   if (o.role() == blink::WebAXRolePopUpButton ||
       o.ariaHasPopup())
     state |= (1 << ui::AX_STATE_HASPOPUP);
 
   if (o.isHovered())
     state |= (1 << ui::AX_STATE_HOVERED);
 
-  if (o.isIndeterminate())
-    state |= (1 << ui::AX_STATE_INDETERMINATE);
-
   if (!o.isVisible())
     state |= (1 << ui::AX_STATE_INVISIBLE);
 
   if (o.isLinked())
     state |= (1 << ui::AX_STATE_LINKED);
 
   if (o.isMultiline())
     state |= (1 << ui::AX_STATE_MULTILINE);
 
   if (o.isMultiSelectable())
@@ skipping 467 matching lines @@
     case blink::WebAXDescriptionFromRelatedElement:
       return ui::AX_DESCRIPTION_FROM_RELATED_ELEMENT;
     default:
       NOTREACHED();
   }
 
   return ui::AX_DESCRIPTION_FROM_UNINITIALIZED;
 }
 
 }  // namespace content.