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+<!DOCTYPE html>
+<html
+ reftest-async-scroll
+ reftest-displayport-x="0" reftest-displayport-y="0"
+ reftest-displayport-w="800" reftest-displayport-h="2000"
+ reftest-async-scroll-x="0" reftest-async-scroll-y="-200">
+<head>
+ <style>
+ html {
+ scrollbar-width: none;
+ }
+ body {
+ height: 3000px;
+ margin: 0px;
+ padding: 0px;
+ border: 0px;
+ }
+ iframe {
+ width: 100%;
+ height: 100%;
+ margin: 0px;
+ padding: 0px;
+ border: 0px;
+ display: block;
+ }
+ </style>
+</head>
+<body >
+ <!-- Test that an overscroll past one end of a viewport is
+ rendered as having the content create a gutter, and that
+ the overscroll is reduced by some factor such that
+ a 100px scroll must produce a rendered translation of less than
+ 100px.
+
+ Current overscroll physics mean that an instantaneous overscroll
+ by 200px produces an 8px gutter. This is governed by the logic in
+ Axis::ApplyResistance(); if that logic is changed, this test will
+ need to be modified to account for the new result.
+ -->
+ <iframe src="data:text/html,
+ <!DOCTYPE HTML>
+ <html reftest-displayport-x='0' reftest-displayport-y='0'
+ reftest-displayport-w='800' reftest-displayport-h='2000'
+ style='scrollbar-width:none'>
+ <body style='padding: 0; margin: 0; border: 0'>
+ <div style='position: fixed; padding: 0; margin: 0; border: 0; background: green; width: 200px; height: 200px'>
+ </div>
+ </body>
+ </html>
+ ">
+ </iframe>
+</body>
+</html>