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diff --git a/third_party/WebKit/LayoutTests/fast/forms/textarea/textarea-selection-preservation.html b/third_party/WebKit/LayoutTests/fast/forms/textarea/textarea-selection-preservation.html
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+<html>
+<head>
+<script src="../../../resources/js-test.js"></script>
+</head>
+<body>
+<p>This tests for problems where we'd lose the selection in a textarea when making style and value changes.</p>
+<div id="console"></div>
+<form id="form"><textarea id="ta">abc123
+</textarea></form>
+<script type="text/javascript">
+    var ta = document.getElementById('ta');
+    debug("- default value");
+    shouldBe('ta.selectionStart', '0');
+    shouldBe('ta.selectionEnd', '0');
+    debug("- set selectionStart/End");
+    ta.selectionStart = 3;
+    ta.selectionEnd = 4;
+    shouldBe('ta.selectionStart', '3');
+    shouldBe('ta.selectionEnd', '4');
+    debug("- add background style");
+    ta.setAttribute("style", "background-color: yellow");
+    shouldBe('ta.selectionStart', '3');
+    shouldBe('ta.selectionEnd', '4');
+    debug("- set value to same value");
+    ta.value = "abc123\n";
+    shouldBe('ta.selectionStart', '3');
+    shouldBe('ta.selectionEnd', '4');
+    debug("- set value to a different value");
+    ta.value = "abc123";
+    shouldBe('ta.selectionStart', '6');
+    shouldBe('ta.selectionEnd', '6');
+    debug("- set selection so we can test again without a trailing newline");
+    ta.selectionStart = 3;
+    ta.selectionEnd = 4;
+    ta.removeAttribute("style");
+    shouldBe('ta.selectionStart', '3');
+    shouldBe('ta.selectionEnd', '4');
+    debug("- add background style");
+    ta.setAttribute("style", "background-color: yellow");
+    shouldBe('ta.selectionStart', '3');
+    shouldBe('ta.selectionEnd', '4');
+    debug("- set value to same value");
+    ta.value = "abc123";
+    shouldBe('ta.selectionStart', '3');
+    shouldBe('ta.selectionEnd', '4');
+
+    debug("- reset form");
+    form.reset();
+    shouldBe('ta.selectionStart', '7');
+    shouldBe('ta.selectionEnd', '7');
+
+    debug("- set new defaultValue");
+    ta.defaultValue = 'abc123456';
+    shouldBe('ta.selectionStart', '9');
+    shouldBe('ta.selectionEnd', '9');
+
+    debug("- set same defaultValue");
+    ta.setSelectionRange(2, 3);
+    ta.defaultValue = 'abc123456';
+    shouldBe('ta.selectionStart', '9');
+    shouldBe('ta.selectionEnd', '9');
+
+    debug("- append a text node");
+    ta.appendChild(document.createTextNode('foo'));
+    shouldBe('ta.selectionStart', '12');
+    shouldBe('ta.selectionEnd', '12');
+
+    debug("- append a empty text node");
+    ta.setSelectionRange(2, 3);
+    ta.appendChild(document.createTextNode(''));
+    shouldBe('ta.selectionStart', '12');
+    shouldBe('ta.selectionEnd', '12');
+</script>
+</body>
+</html>