SVG: Promote d to a property

third_party/WebKit/LayoutTests/svg/css/inherit-d.svg

+<svg width="800" height="600" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <style>
+        #d0 {
+            fill: red;
+            d: path('M 200 100 A 100 100 0 1 1 200 100');
+        }
+
+        #p0 {
+            d: inherit;
+        }
+
+        #g0 {
+            fill: green;
+            d: path('M 100 100 H 300 V 300 H 100 V 100');
+        }
+
+        #u0 {
+            d: inherit;
+        }
+    </style>
+
+    <defs id="d0">
+      <path id="p0" />
+    </defs>
+
+    <g id="g0">
+      <use id="u0" xlink:href="#p0" />
+    </g>
+</svg>