Introduce css3TextEnabled instead of CSS3_TEXT.

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

 function testComputedStyle(a_value, c_value)
 {
-    shouldBe("window.getComputedStyle(ancestor).getPropertyCSSValue('-webkit-text-align-last').cssText",  "'" + a_value + "'");
-    shouldBe("window.getComputedStyle(child).getPropertyCSSValue('-webkit-text-align-last').cssText",  "'" + c_value + "'");
+    shouldBe("window.getComputedStyle(ancestor).getPropertyCSSValue('text-align-last').cssText",  "'" + a_value + "'");
+    shouldBe("window.getComputedStyle(child).getPropertyCSSValue('text-align-last').cssText",  "'" + c_value + "'");
     debug('');
 }
 
 function ownValueTest(a_value, c_value)
 {
     debug("Value of ancestor is '" + a_value + ", while child is '" + c_value + "':");
-    ancestor.style.webkitTextAlignLast = a_value;
-    child.style.webkitTextAlignLast = c_value;
+    ancestor.style.textAlignLast = a_value;
+    child.style.textAlignLast = c_value;
     testComputedStyle(a_value, c_value);
 }
 
 function inheritanceTest(a_value)
 {
     debug("Value of ancestor is '" + a_value + "':");
-    ancestor.style.webkitTextAlignLast = a_value;
+    ancestor.style.textAlignLast = a_value;
     testComputedStyle(a_value, a_value);
 }
 
-description("This test checks that the value of -webkit-text-align-last is properly inherited to the child.");
+description("This test checks that the value of text-align-last is properly inherited to the child.");
 
 ancestor = document.getElementById('ancestor');
 child = document.getElementById('child');
 
 inheritanceTest("start");
 inheritanceTest("end");
 inheritanceTest("left");
 inheritanceTest("right");
 inheritanceTest("center");
 inheritanceTest("justify");
 inheritanceTest("auto");
 
 ownValueTest("start", "end");
 ownValueTest("left", "right");