DevTools: Fix and re-enable ListControl test

The changes to UI.ListControl in [1] break a web test, so this CL exists
to fix and re-enable it once the product changes merge.

[1] https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/1880309

Bug: 963183
Change-Id: Ifd52271fdd1d43f45e4635ba3ac88a3cdb80fe07
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1690089Reviewed-by: Lorne Mitchell <lomitch@microsoft.com>
Commit-Queue: Jack Lynch <jalyn@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#723611}

third_party/blink/web_tests/TestExpectations

@@ -6073,9 +6073,6 @@ crbug.com/878878 [ Mac ] virtual/threaded/fast/scroll-snap/snaps-for-different-k
 crbug.com/878878 virtual/threaded/fast/scroll-snap/animate-fling-to-snap-points.html [ Failure Pass Timeout ]
 crbug.com/878878 virtual/threaded/fast/scroll-snap/snap-scrolls-visual-viewport.html [ Failure Pass ]
 
-# DevTools ListControl (disabled temporarily as part of workflow)
-crbug.com/963183 http/tests/devtools/unit/list-control-equal-height.js [ Skip  ]
-
 # Sheriff 2019-12-10
 crbug.com/1032451 virtual/threaded-no-composited-antialiasing/animations/stability/animation-iteration-event-destroy-renderer.html [ Pass Timeout ]
 

third_party/blink/web_tests/http/tests/devtools/unit/list-control-equal-height.js

@@ -29,6 +29,10 @@
       if (toElement)
         toElement.classList.add('selected');
     }
+
+    updateSelectedItemARIA(fromElement, toElement) {
+      return false;
+    }
   }
 
   var delegate = new Delegate();