[Typed-OM] Enable getting CSSURLImageValue from stylemap

third_party/WebKit/LayoutTests/typedcssom/cssURLImageValue.html

Index: third_party/WebKit/LayoutTests/typedcssom/cssURLImageValue.html
diff --git a/third_party/WebKit/LayoutTests/typedcssom/cssURLImageValue.html b/third_party/WebKit/LayoutTests/typedcssom/cssURLImageValue.html
index 58c665bdc4ecd8d8ae7b50d483a2d681b0065e44..bfba81785cb7893e149d73b22ccca7201e8251a3 100644
--- a/third_party/WebKit/LayoutTests/typedcssom/cssURLImageValue.html
+++ b/third_party/WebKit/LayoutTests/typedcssom/cssURLImageValue.html
@@ -5,6 +5,7 @@
 <div id="testImage1"></div>
 <div id="testImage2"></div>
 <div id="testImage3"></div>
+<div id="testImage4"></div>
 
 <script>
 
@@ -21,6 +22,15 @@ function base64Url() {
   return "data:image/gif;base64,R0lGODlhAQABAAAAACwAAAAAAQABAAA=";
 }
 
+function assertCorrectURLImageValue(image, expectedUrl, expectedWidth, expectedHeight, expectedRatio) {
+  assert_true(image instanceof CSSURLImageValue);
+  assert_equals(image.url, expectedUrl);
+  assert_equals(image.state, "loaded");
+  assert_equals(image.intrinsicWidth, expectedWidth);
+  assert_equals(image.intrinsicHeight, expectedHeight);
+  assert_equals(image.intrinsicRatio, expectedRatio);
+}
+
 test(function() {
   var image = new CSSURLImageValue(url());
   assert_equals(image.state, "unloaded");
@@ -107,4 +117,17 @@ test(function() {
   };
 }
 
+test(function() {
+  var url4 = base64Url();
+
+  for (var i = 0; i < imageProperties.length; ++i) {
+    testImage4.style[imageProperties[i]] = 'url(' + url4 + ')';
+  }
+
+  for (var i = 0; i < imageProperties.length; ++i) {
+    assertCorrectURLImageValue(getComputedStyleMap(testImage4).get(imageProperties[i]), url4, 1, 1, 1);
+    assertCorrectURLImageValue(testImage4.styleMap.get(imageProperties[i]), url4, 1, 1, 1);
+  }
+}, "Getting CSSURLImageValue from StyleMap");
+
 </script>