Invalidate properties registered as non-inherited for custom paint

third_party/WebKit/LayoutTests/csspaint/invalidation-content-image.html

Index: third_party/WebKit/LayoutTests/csspaint/invalidation-content-image.html
diff --git a/third_party/WebKit/LayoutTests/csspaint/invalidation-content-image.html b/third_party/WebKit/LayoutTests/csspaint/invalidation-content-image.html
index a63ae99bf17ee3af55e56e89fd327dfe0cb62fc9..b358fb000352c3b8a52c862e0f734e63723479e7 100644
--- a/third_party/WebKit/LayoutTests/csspaint/invalidation-content-image.html
+++ b/third_party/WebKit/LayoutTests/csspaint/invalidation-content-image.html
@@ -18,6 +18,9 @@
 <p>This tests the invalidation behaviour of the paint callback.</p>
 <p>See the devtools console for additional test output.</p>
 <script>
+CSS.registerProperty({name: '--length-inherited', syntax: '<length>', inherits: true, initialValue: '0px'});
+CSS.registerProperty({name: '--length-non-inherited', syntax: '<length>', inherits: false, initialValue: '0px'});
+
 // TODO(ikilpatrick): Should test shorthands.
 testRunnerInvalidationLogging('content', [
     { property: 'max-height', value: '160px' },
@@ -36,5 +39,7 @@ testRunnerInvalidationLogging('content', [
     { property: '--foo', prevValue: 'foo', value: 'var(--str)', noInvalidation: true},
     { property: '--str', value: 'bar'},
     { property: '--str', value: 'foo', noInvalidation: true },
+    { property: '--length-inherited', value: '10px'},
+    { property: '--length-non-inherited', value: '20px'},
 ]);
 </script>