Implement computedRole and computedName (behind a flag)

Source/modules/accessibility/AXMockObject.cpp

 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
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 #include "config.h"
 #include "modules/accessibility/AXMockObject.h"
 
+#include "core/dom/AXObjectCache.h"
+
 namespace blink {
 
-AXMockObject::AXMockObject()
+AXMockObject::AXMockObject(AXObjectCache* axObjectCache)
+    : AXObject(axObjectCache)
 {
 }
 
 AXMockObject::~AXMockObject()
 {
 }
 
 bool AXMockObject::computeAccessibilityIsIgnored() const
 {
     return accessibilityIsIgnoredByDefault();
 }
 
 }