Convert some text-based-repaint tests for spv2

LayoutTests/paint/invalidation/spv2/clipping-should-not-repaint-composited-descendants-expected.html

Index: LayoutTests/paint/invalidation/spv2/clipping-should-not-repaint-composited-descendants-expected.html
diff --git a/LayoutTests/compositing/repaint/clipping-should-not-repaint-composited-descendants.html b/LayoutTests/paint/invalidation/spv2/clipping-should-not-repaint-composited-descendants-expected.html
similarity index 53%
copy from LayoutTests/compositing/repaint/clipping-should-not-repaint-composited-descendants.html
copy to LayoutTests/paint/invalidation/spv2/clipping-should-not-repaint-composited-descendants-expected.html
index d6d2fa2015a3687be81aa606274dfdb199ad4a44..ae88e81ded76e8d50d25b2f407c906415ad1540b 100644
--- a/LayoutTests/compositing/repaint/clipping-should-not-repaint-composited-descendants.html
+++ b/LayoutTests/paint/invalidation/spv2/clipping-should-not-repaint-composited-descendants-expected.html
@@ -10,10 +10,8 @@
         position: absolute;
         height: 300px;
         transform: translateZ(0);
-    }
-
-    .with-initial-clipping {
-        clip: rect(50px, 250px, 250px, 50px);
+        width: 100%;
+        clip: rect(100px, 200px, 200px, 100px);
     }
 
     .clipped-composited-child {
@@ -24,38 +22,13 @@
         transform: translateZ(0);
     }
 </style>
-<style id="alt1">
-    .clipping-container {
-        width: 300px;
-    }
-</style>
-<style id="alt2">
-    .clipping-container {
-        width: 100%;
-        clip: rect(100px, 200px, 200px, 100px);
-    }
-</style>
-<script src="../../fast/repaint/resources/text-based-repaint.js"></script>
-<script>
-    var alt1 = document.getElementById('alt1');
-    var alt2 = document.getElementById('alt2');
-    alt2.disabled = true;
-
-    function repaintTest() {
-        alt2.disabled = false;
-        alt1.disabled = true;
-    }
-
-    runRepaintTest();
-</script>
-
 <div class="spacer">
     <div class="clipping-container">
         <div class="clipped-composited-child"></div>
     </div>
 </div>
 <div class="spacer">
-    <div class="clipping-container with-initial-clipping">
+    <div class="clipping-container">
         <div class="clipped-composited-child"></div>
     </div>
 </div>