Updating textContent attribute test for IE9

The test page is loaded in Quirks mode in IE9, which means that IE doesn't
return a textContent attribute for that page. The alternatives are to
force the test page to load in Standards mode by adding a doctype, or
ignore the test for IE9. This commit chooses the latter approach.

dotnet/test/common/ElementAttributeTest.cs

@@ -249,9 +249,9 @@ public void ShouldTreatReadonlyAsAValue()
         [Test]
         public void ShouldReturnHiddenTextForTextContentAttribute()
         {
-            if (TestUtilities.IsOldIE(driver))
+            if (!TestUtilities.IsIE10OrHigher(driver))
             {
-                Assert.Ignore("IE 8 or below does not handle textContent attribute");
+                Assert.Ignore("IE8 or below does not handle textContent attribute; IE9 loads page in quirks mode, so no textContent attribute");
             }
 
             driver.Url = simpleTestPage;

java/client/test/org/openqa/selenium/ElementAttributeTest.java

@@ -253,7 +253,7 @@ public void testShouldTreatReadonlyAsAValue() {
 
   @Test
   public void testShouldReturnHiddenTextForTextContentAttribute() {
-    assumeFalse("IE before 9 doesn't handle textContent attribute", TestUtilities.isOldIe(driver));
+    assumeFalse("IE before 9 doesn't handle textContent attribute; IE9 loads page in quirks mode, so no textContent attribute", TestUtilities.getIEVersion(driver) < 10);
 
     driver.get(pages.simpleTestPage);