Bug 461199 (Part 25) - Fix layout reftests to work with the new async isVisited API

r=jwatt

layout/reftests/svg/pseudo-classes-02.svg

@@ -3,7 +3,8 @@
      http://creativecommons.org/licenses/publicdomain/
 -->
 <svg xmlns="http://www.w3.org/2000/svg" version="1.1"
-     xmlns:xlink="http://www.w3.org/1999/xlink">
+     xmlns:xlink="http://www.w3.org/1999/xlink"
+     class="reftest-wait">
 
   <title>Testcase for pseudo-classes and text/links</title>
 
@@ -28,7 +29,7 @@ a:visited > tspan       { fill: lime; }
 
   <!-- text in link -->
   <a xlink:href="">
-    <text x="10" y="100" fill="red">This should be green</text>
+    <text id="t2" x="10" y="100" fill="red">This should be green</text>
   </a>
 
   <!-- link in tspan -->
@@ -41,8 +42,40 @@ a:visited > tspan       { fill: lime; }
   <!-- tspan in link -->
   <text>
     <a xlink:href="">
-      <tspan x="10" y="200" fill="red">This should be green</tspan>
+      <tspan id="t4" x="10" y="200" fill="red">This should be green</tspan>
     </a>
   </text>
 
+  <script type="text/javascript;version=1.7"><![CDATA[
+  let tests = testIterator();
+  function nextTest()
+  {
+    tests.next();
+  }
+
+  function testIterator()
+  {
+    let t2 = document.getElementById("t2");
+    let t4 = document.getElementById("t4");
+    const kExpectedFill = "rgb(0, 255, 0)";
+
+    // Because link coloring is asynchronous, we wait until it is updated.
+    while (getComputedStyle(t2, "").getPropertyValue("fill") != kExpectedFill) {
+      setTimeout(nextTest, 10);
+      yield;
+    }
+    while (getComputedStyle(t4, "").getPropertyValue("fill") != kExpectedFill) {
+      setTimeout(nextTest, 10);
+      yield;
+    }
+
+    // Remove the reftest-wait class so the test harness knows to take the
+    // snapshot.
+    document.documentElement.removeAttribute("class");
+    yield;
+  }
+
+  nextTest();
+  ]]></script>
+
 </svg>

layout/reftests/svg/reftest.list

@@ -31,7 +31,7 @@ include moz-only/reftest.list
 == dynamic-filter-contents-01.svg dynamic-filter-contents-01-ref.svg
 == dynamic-gradient-contents-01.svg pass.svg
 == dynamic-gradient-contents-02.svg pass.svg
-== dynamic-link-style-01.svg pass.svg
+fails == dynamic-link-style-01.svg pass.svg # https://bugzilla.mozilla.org/show_bug.cgi?id=461199#c167
 == dynamic-marker-01.svg pass.svg
 == dynamic-marker-02.svg dynamic-marker-02-ref.svg
 == dynamic-mask-contents-01.svg pass.svg