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

content/browser/accessibility/browser_accessibility_cocoa.mm

 // 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 <execinfo.h>
 
 #import "content/browser/accessibility/browser_accessibility_cocoa.h"
 
 #include <map>
 
@@ skipping 1315 matching lines @@
   } else if ([role isEqualToString:NSAccessibilityCheckBoxRole] ||
              [role isEqualToString:NSAccessibilityRadioButtonRole]) {
     int value = 0;
     value = GetState(
         browserAccessibility_, ui::AX_STATE_CHECKED) ? 1 : 0;
     value = GetState(
         browserAccessibility_, ui::AX_STATE_SELECTED) ?
             1 :
             value;
 
-    if (browserAccessibility_->GetBoolAttribute(
-        ui::AX_ATTR_BUTTON_MIXED)) {
+    if (browserAccessibility_->GetBoolAttribute(ui::AX_ATTR_STATE_MIXED)) {
       value = 2;
     }
     return [NSNumber numberWithInt:value];
   } else if ([role isEqualToString:NSAccessibilityProgressIndicatorRole] ||
              [role isEqualToString:NSAccessibilitySliderRole] ||
              [role isEqualToString:NSAccessibilityIncrementorRole] ||
              [role isEqualToString:NSAccessibilityScrollBarRole]) {
     float floatValue;
     if (browserAccessibility_->GetFloatAttribute(
             ui::AX_ATTR_VALUE_FOR_RANGE, &floatValue)) {
@@ skipping 757 matching lines @@
   if (!browserAccessibility_)
     return [super hash];
   return browserAccessibility_->GetId();
 }
 
 - (BOOL)accessibilityShouldUseUniqueId {
   return YES;
 }
 
 @end