import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

layout/reftests/forms/button/focus-area-percent-units-2-ref.html

@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- Any copyright is dedicated to the Public Domain.
+   - http://creativecommons.org/publicdomain/zero/1.0/ -->
+<html>
+<head>
+  <title>Reference case for bug 1272983</title>
+  <style>
+    /* Set explicit font size so that em units are predictable: */
+    body, button { font: 10px sans-serif; }
+
+    /* Add outline to help visualize the padding outside of buttons: */
+    button { outline: 1px solid black; }
+
+    /* Set padding to 0 for all cases. In the first 3, that's how we expect
+       the testcase to render; and in the 4th and 5th, our reference padding
+       will be applied via a child div instead of via the pseudo-element. */
+    button.mfi1::-moz-focus-inner,
+    button.mfi2::-moz-focus-inner,
+    button.mfi3::-moz-focus-inner,
+    button.mfi4::-moz-focus-inner,
+    button.mfi5::-moz-focus-inner { padding: 0; }
+
+    /* Use an explicit div instead of pseudo-element, for reference case's
+       version of padding values that we actually expect to take effect: */
+    button.mfi4 > div { padding: 10px; }
+    button.mfi5 > div { padding: 2em; }
+
+    /* As above, set padding to 0 for all cases: */
+    button.mfo1::-moz-focus-outer,
+    button.mfo2::-moz-focus-outer,
+    button.mfo3::-moz-focus-outer,
+    button.mfo4::-moz-focus-outer,
+    button.mfo5::-moz-focus-outer { padding: 0; }
+
+    /* To make reference for -moz-focus-outer padding that we expect to
+       take effect, we'll put the padding on a wrapper-div (and bump the
+       button's outline to that div). */
+    div.mfo4-wrapper { padding: 10px; }
+    div.mfo5-wrapper { padding: 20px; /* = 2em * 10px/em */ }
+
+    button.mfo4,
+    button.mfo5 { outline: none; }
+    div.mfo4-wrapper,
+    div.mfo5-wrapper { display: inline-block; outline: 1px solid black; }
+  </style>
+</head>
+<body>
+  <button class="mfi1">mfi1</button>
+  <button class="mfi2">mfi2</button>
+  <button class="mfi3">mfi3</button>
+  <br>
+  <button class="mfi4"><div>mfi4</div></button>
+  <button class="mfi5"><div>mfi5</div></button>
+  <br>
+
+  <button class="mfo1">mfo1</button>
+  <button class="mfo2">mfo2</button>
+  <button class="mfo3">mfo3</button>
+  <br>
+  <div class="mfo4-wrapper">
+    <button class="mfo4">mfo4</button>
+  </div>
+  <div class="mfo5-wrapper">
+    <button class="mfo5">mfo5</button>
+  </div>
+  <br>
+</body>
+</html>