Add accessibilityEnabled and inlineTextBoxAccessiblityEnabled to Settings, but don't use them yet.

Source/web/WebAXObject.cpp

Index: Source/web/WebAXObject.cpp
diff --git a/Source/web/WebAXObject.cpp b/Source/web/WebAXObject.cpp
index a347122bc95401b112566303c3aa5514106661aa..dacc06d4b1b7b8d4912dd947a6ffe16814726dea 100644
--- a/Source/web/WebAXObject.cpp
+++ b/Source/web/WebAXObject.cpp
@@ -79,11 +79,6 @@ void WebAXObject::enableAccessibility()
     AXObjectCache::enableAccessibility();
 }
 
-// static
-bool WebAXObject::accessibilityEnabled()
-{
-    return AXObjectCache::accessibilityEnabled();
-}
 
 // static
 void WebAXObject::enableInlineTextBoxAccessibility()