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 cb9314e21937b19f2158b8ccd8294dbcda0b2395..b2e953e5f732f9d409bfea09c738e3074f8666a7 100644
--- a/Source/web/WebAXObject.cpp
+++ b/Source/web/WebAXObject.cpp
@@ -91,11 +91,6 @@ void WebAXObject::enableAccessibility()
     AXObjectCache::enableAccessibility();
 }
 
-// static
-bool WebAXObject::accessibilityEnabled()
-{
-    return AXObjectCache::accessibilityEnabled();
-}
 
 // static
 void WebAXObject::enableInlineTextBoxAccessibility()