Deprecate NodeIterator.expandEntityReferences / TreeWalker.expandEntityReferences

Source/core/frame/UseCounter.cpp

Index: Source/core/frame/UseCounter.cpp
diff --git a/Source/core/frame/UseCounter.cpp b/Source/core/frame/UseCounter.cpp
index ae0f32edc8b4e0f828d9421baa7147f55ba7ba22..b409adb46619e3a8fc44bd159b29f7bbd38b9377 100644
--- a/Source/core/frame/UseCounter.cpp
+++ b/Source/core/frame/UseCounter.cpp
@@ -721,6 +721,12 @@ String UseCounter::deprecationMessage(Feature feature)
     case AttrTextContent:
         return "'Attr.textContent' is deprecated. Please use 'value' instead.";
 
+    case NodeIteratorExpandEntityReferences:
+        return "'NodeIterator.expandEntityReferences' is deprecated and has been removed from DOM. It always returns false.";
+
+    case TreeWalkerExpandEntityReferences:
+        return "'TreeWalker.expandEntityReferences' is deprecated and has been removed from DOM. It always returns false.";
+
     // Features that aren't deprecated don't have a deprecation message.
     default:
         return String();