Use the runtime flag and remove '-webkit-' prefix for CSS3 text-indent.

LayoutTests/fast/css3-text/css3-text-indent/getComputedStyle/script-tests/getComputedStyle-text-indent-inherited.js

 function testComputedStyle(ancestorValue, childValue)
 {
     shouldBe("window.getComputedStyle(ancestor).getPropertyValue('text-indent')",  "'" + ancestorValue + "'");
     shouldBe("window.getComputedStyle(child).getPropertyValue('text-indent')",  "'" + childValue + "'");
     debug('');
 }
 
 function ownValueTest(ancestorValue, childValue)
 {
     debug("Value of ancestor is '" + ancestorValue + "', while child is '" + childValue + "':");
     ancestor.style.textIndent = ancestorValue;
     child.style.textIndent = childValue;
     testComputedStyle(ancestorValue, childValue);
 }
 
 function inheritanceTest(ancestorValue)
 {
     debug("Value of ancestor is '" + ancestorValue + "':");
     ancestor.style.textIndent = ancestorValue;
     testComputedStyle(ancestorValue, ancestorValue);
 }
 
-description("This tests check that the value of text-indent is properly inherited to the child.");
+description("This test checks that the value of text-indent is properly inherited to the child.");
 
 ancestor = document.getElementById('ancestor');
 child = document.getElementById('child');
 
 inheritanceTest("10px");
-inheritanceTest("10px -webkit-each-line");
+inheritanceTest("10px each-line");
 
-ownValueTest("10px -webkit-each-line", "10px");
+ownValueTest("10px each-line", "10px");