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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="1800"
+ style="scrollbar-width: none">
+<!-- This is a test where we set the async-scroll position so that it
+ extends outside the displayport, but also have some fixed-position
+ elements in the mix. In particular, the purple element is below
+ (in z-order) the main scrolling content and should not be made visible
+ while checkerboarding; the checkerboarding code should cover it up
+ with the appropriate background color. -->
+<body style="background-color: green; height: 5000px">
+ <div style="position:fixed; left: 0px; top: 0px; width: 100px; height: 500px; background-color: purple; z-index: -1"></div>
+ <div style="position:absolute; left: 0px; top: 500px; background-color: yellow; width: 100px; height: 4500px"></div>
+ <div style="position:fixed; left: 10px; top: 10px; width: 10px; height: 10px; background-color: blue"></div>
+</body>