Update CSS tests to revision 31d63cc79bd4c929ed582229e936d7b389f3e6ab

tests/wpt/css-tests/css21_dev/html4/absolute-replaced-height-007.htm

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+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+    <head>
+        <title>CSS Test: Absolutely positioned inline-block replaced elements with percentage based intrinsic height that cannot be resolved</title>
+        <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
+        <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-replaced-height">
+        <link rel="match" href="reference/absolute-replaced-height-007-ref.htm">
+
+        <meta name="flags" content="">
+        <meta name="assert" content="An absolutely positioned inline-block replaced element with a percentage height that cannot be resolved has no intrinsic height.">
+        <style type="text/css">
+            #div1
+            {
+                position: relative;
+            }
+            div div
+            {
+                border: solid green;
+                position: absolute;
+                width: 300px;
+            }
+            iframe
+            {
+                border: solid red;
+                position: absolute;
+                width: auto;
+            }
+
+            /*
+            "
+            (...)
+            the height of the containing block of an absolutely positioned 
+            element is independent of the size of the element itself, and thus 
+            a percentage height on such an element *_can always be resolved_*. 
+            However, it may be that the height is not known until elements 
+            that come later in the document have been processed. "
+            http://www.w3.org/TR/CSS21/visudet.html#the-height-property 
+            "
+            */
+        </style>
+    </head>
+    <body>
+        <p>Test passes if there is <strong>no red</strong>.</p>
+        <div id="div1">
+            <iframe height="50%"></iframe>
+            <div></div>
+        </div>
+    </body>
+</html>