Expose scroll customization for touch to JS (behind REF).

Source/core/page/scrolling/ScrollState.idl

Index: Source/core/page/scrolling/ScrollState.idl
diff --git a/Source/core/page/scrolling/ScrollState.idl b/Source/core/page/scrolling/ScrollState.idl
index 2c7dcbad41d11f554a60634f72413dff4575e598..7f1d5182907d58ec58f16d6469e673f7881a30d1 100644
--- a/Source/core/page/scrolling/ScrollState.idl
+++ b/Source/core/page/scrolling/ScrollState.idl
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// http://dev.w3.org/houdini/css-scroll-api/
+// https://goo.gl/1ipTpP

[haraken, 2015/07/15 00:15:18]

Can we use a full URL?

[tdresser, 2015/07/15 14:04:54]

Done.

[skobes, 2015/07/15 19:52:40]

@haraken: Just curious, why do you want the full URL?  (I prefer the short URL
for readability, but I don't feel strongly about it.)

[haraken, 2015/07/15 23:33:19]

That's just a convention. We've been adding a full URL in Blink IDL files (which
is helpful to see if the spec is a whatwg one or a w3c one etc).

 
 [
     Constructor(optional double deltaX = 0,
@@ -28,5 +28,5 @@
     readonly attribute boolean shouldPropagate;
 
     [RaisesException] void consumeDelta(double x, double y);
-    // FIXME: implement distributeToScrollChainDescendent.
+    void distributeToScrollChainDescendant();
 };