Transform XML tree viewer to blink-in-js implementation.

Source/core/xml/DocumentXMLTreeViewer.idl

Index: Source/core/xml/DocumentXMLTreeViewer.idl
diff --git a/Source/core/animation/AnimationEffect.idl b/Source/core/xml/DocumentXMLTreeViewer.idl
similarity index 57%
copy from Source/core/animation/AnimationEffect.idl
copy to Source/core/xml/DocumentXMLTreeViewer.idl
index f5dc6ce2f5788ac2b080b806ce9f3afba8188b3f..6c7d6ca2cca0df23affb31c9d7a03807f32d187b 100644
--- a/Source/core/animation/AnimationEffect.idl
+++ b/Source/core/xml/DocumentXMLTreeViewer.idl
@@ -2,9 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-[
-    RuntimeEnabled=WebAnimationsAPI,
-    NoInterfaceObject,
-    WillBeGarbageCollected
-] interface AnimationEffect {
+partial interface Document {
+    [ImplementedInPrivateScript, OnlyExposedToPrivateScript] void transformDocumentToTreeView();
 };