Reject invert for outline-color at parse time.

third_party/WebKit/LayoutTests/fast/css/outline-currentcolor.html

Index: third_party/WebKit/LayoutTests/fast/css/outline-currentcolor.html
diff --git a/third_party/WebKit/LayoutTests/fast/css/outline-currentcolor.html b/third_party/WebKit/LayoutTests/fast/css/outline-currentcolor.html
index 914a183b1d500ee9ae5f95014102345d440b1378..468994c2192a31969024e08094c4fb4394efedc3 100644
--- a/third_party/WebKit/LayoutTests/fast/css/outline-currentcolor.html
+++ b/third_party/WebKit/LayoutTests/fast/css/outline-currentcolor.html
@@ -7,6 +7,7 @@
   <div style="color:green">
     <div id="test3" style="color:currentColor; outline: solid 1em currentColor"></div>
   </div>
+  <div id="test4" id="four" style="color:green"></div>
 </div>
 <script src="../../resources/js-test.js"></script>
 <script>
@@ -14,8 +15,10 @@ description('Test that outline-color is non-inherit and currentColor is handled
 var test1 = document.getElementById("test1");
 var test2 = document.getElementById("test2");
 var test3 = document.getElementById("test3");
+var test3 = document.getElementById("test4");
 test2.style.color = "green";
 shouldBeEqualToString('getComputedStyle(test1).outlineColor', 'rgb(0, 128, 0)');
 shouldBeEqualToString('getComputedStyle(test2).outlineColor', 'rgb(0, 128, 0)');
 shouldBeEqualToString('getComputedStyle(test3).outlineColor', 'rgb(0, 128, 0)');
+shouldBeEqualToString('getComputedStyle(test4).outlineColor', 'rgb(0, 128, 0)');
 </script>