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

Source/core/xml/XMLTreeViewer.idl

Index: Source/core/xml/XMLTreeViewer.idl
diff --git a/Source/core/animation/AnimationEffect.idl b/Source/core/xml/XMLTreeViewer.idl
similarity index 57%
copy from Source/core/animation/AnimationEffect.idl
copy to Source/core/xml/XMLTreeViewer.idl
index f5dc6ce2f5788ac2b080b806ce9f3afba8188b3f..b539c1bd37b1cbcacc299918241db11aaf739bf1 100644
--- a/Source/core/animation/AnimationEffect.idl
+++ b/Source/core/xml/XMLTreeViewer.idl
@@ -1,10 +1,6 @@
 // Copyright 2014 The Chromium Authors. All rights reserved.
 // 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 {

[haraken, 2014/08/26 08:05:08]

Add one empty line after the copyright.

[haraken, 2014/08/26 08:05:08]

Rename this file to DocumentXMLTreeViewer.idl. We conventionally prefix an IDL
file of a partial interface with a base interface name.

+    [ImplementedInPrivateScript, OnlyExposedToPrivateScript] void transformDocumentToTreeView();

[haraken, 2014/08/26 08:08:19]

abarth@: I feel OK with this (reverse-)backdoor, but what do you think?
XMLTreeViewer is not a web-exposed feature and thus we'll anyway need a way to
kick off the viewer script from C++. In other words, we'll anyway need one
reverse-backdoor ("reverse-" means that this is a backdoor for C++ to kick off
JavaScript).

 };