| Index: third_party/WebKit/LayoutTests/fast/css/invalidation/sheet-ruleset-invalidation.html | 
| diff --git a/third_party/WebKit/LayoutTests/fast/css/invalidation/sheet-ruleset-invalidation.html b/third_party/WebKit/LayoutTests/fast/css/invalidation/sheet-ruleset-invalidation.html | 
| new file mode 100644 | 
| index 0000000000000000000000000000000000000000..e8a7c780b3a0342601fd4fb64d166c0e87864d34 | 
| --- /dev/null | 
| +++ b/third_party/WebKit/LayoutTests/fast/css/invalidation/sheet-ruleset-invalidation.html | 
| @@ -0,0 +1,20 @@ | 
| +<!DOCTYPE html> | 
| +<script src="../../../resources/testharness.js"></script> | 
| +<script src="../../../resources/testharnessreport.js"></script> | 
| +<style></style> | 
| +<div> | 
| +    <div></div> | 
| +    <div></div> | 
| +    <div></div> | 
| +    <div></div> | 
| +    <div></div> | 
| +    <span></span> | 
| +</div> | 
| +<script> | 
| +    test(() => { | 
| +        assert_true(!!window.internals, "Test requires window.internals."); | 
| +        document.body.offsetTop; | 
| +        document.styleSheets[0].insertRule("span{background:green}", 0); | 
| +        assert_equals(internals.updateStyleAndReturnAffectedElementCount(), 1, "Check that only the span is affected."); | 
| +    }, "Inserting a style rule with a type selector should only invalidate elements with that type."); | 
| +</script> | 
|  |