Bug 1812868 - fix mismatch in scrollbar size. r=emilio CLOSED TREE

layout/style/test/chrome/test_scrollbar_inline_size.html

@@ -28,7 +28,8 @@
     let ref = document.getElementById("ref");
     let scrollbarSize = scroller.getBoundingClientRect().width - scroller.clientWidth;
     ok(scrollbarSize > 0, "Should have a scrollbar");
-    is(ref.getBoundingClientRect().width, scrollbarSize, "env() should match the scrollbar size");
+    // clientWidth rounds, so we might see a bit of rounding error
+    isfuzzy(ref.getBoundingClientRect().width, scrollbarSize, 1, "env() should match the scrollbar size");
   }
 
   runTest().then(SimpleTest.finish);