Refactor LayoutTests/svg/dom/SVGLengthList*.html

third_party/WebKit/LayoutTests/svg/dom/resources/SVGLengthList-helper.js

Index: third_party/WebKit/LayoutTests/svg/dom/resources/SVGLengthList-helper.js
diff --git a/third_party/WebKit/LayoutTests/svg/dom/resources/SVGLengthList-helper.js b/third_party/WebKit/LayoutTests/svg/dom/resources/SVGLengthList-helper.js
new file mode 100644
index 0000000000000000000000000000000000000000..3cf888b7dbaeb370ef1b34409540337dee2c8e33
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/svg/dom/resources/SVGLengthList-helper.js
@@ -0,0 +1,7 @@
+function assert_list(list, expectedValues) {
+  assert_equals(list.numberOfItems, expectedValues.length);
+  for (var index = 0; index < expectedValues.length; ++index)
+    assert_equals(list.getItem(index).value, expectedValues[index]);
+
+  assert_throws("IndexSizeError", function() { list.getItem(expectedValues.length); });
+}