Convert some text-based-repaint tests for spv2

LayoutTests/paint/invalidation/spv2/horizontal-bt-overflow-same-expected.html

Index: LayoutTests/paint/invalidation/spv2/horizontal-bt-overflow-same-expected.html
diff --git a/LayoutTests/fast/repaint/horizontal-bt-overflow-same.html b/LayoutTests/paint/invalidation/spv2/horizontal-bt-overflow-same-expected.html
similarity index 70%
copy from LayoutTests/fast/repaint/horizontal-bt-overflow-same.html
copy to LayoutTests/paint/invalidation/spv2/horizontal-bt-overflow-same-expected.html
index 8f191a15201531d14516dc987cc2fde4957b3046..a24c88986410e731346efc7c2d3659307aad505b 100644
--- a/LayoutTests/fast/repaint/horizontal-bt-overflow-same.html
+++ b/LayoutTests/paint/invalidation/spv2/horizontal-bt-overflow-same-expected.html
@@ -19,7 +19,6 @@
             width: 100px;
             height: 100px;
             background-color: orange;
-            visibility: hidden;
         }
     </style>
 </head>
@@ -30,17 +29,10 @@
     </div>
     An orange rect should be painted.<br/>
     In DumpRenderTree, there should be repaint logs of 100x100 rect. We don't care how many times is the log dumpped.
-    <script src="../../resources/run-after-layout-and-paint.js"></script>
-    <script src="resources/text-based-repaint.js"></script>
     <script>
-        repaintTest = function() {
-            var target = document.getElementsByClassName("target")[0];
-            target.style.visibility = "visible";
-        };
         var container = document.getElementsByClassName("container")[0];
-        runAfterLayoutAndPaint(function() {
+        onload = function() {
             container.scrollTop = 0;
-            runRepaintTest();
-        });
+        };
     </script>
 </body></html>