Remove position: sticky

Source/devtools/front_end/layers/LayerDetailsView.js

Index: Source/devtools/front_end/layers/LayerDetailsView.js
diff --git a/Source/devtools/front_end/layers/LayerDetailsView.js b/Source/devtools/front_end/layers/LayerDetailsView.js
index 714d37ea1d4ebf1bda74fa80ec28214277342f3e..cb054942927460d7a35c296b76fac86646c6c286 100644
--- a/Source/devtools/front_end/layers/LayerDetailsView.js
+++ b/Source/devtools/front_end/layers/LayerDetailsView.js
@@ -60,6 +60,7 @@ WebInspector.LayerDetailsView.CompositingReasonDetail = {
     "animation": WebInspector.UIString("Composition due to association with an animated element."),
     "filters": WebInspector.UIString("Composition due to association with an element with CSS filters applied."),
     "positionFixed": WebInspector.UIString("Composition due to association with an element with a \"position: fixed\" style."),
+    // FIXME: Can we remove this entry now that position: sticky has been removed?
     "positionSticky": WebInspector.UIString("Composition due to association with an element with a \"position: sticky\" style."),
     "overflowScrollingTouch": WebInspector.UIString("Composition due to association with an element with a \"overflow-scrolling: touch\" style."),
     "blending": WebInspector.UIString("Composition due to association with an element that has blend mode other than \"normal\"."),