Convert some repaint tests into ref tests

third_party/WebKit/LayoutTests/fast/repaint/push-block-with-first-line-expected.html

Index: third_party/WebKit/LayoutTests/fast/repaint/push-block-with-first-line-expected.html
diff --git a/third_party/WebKit/LayoutTests/fast/repaint/push-block-with-first-line.html b/third_party/WebKit/LayoutTests/fast/repaint/push-block-with-first-line-expected.html
similarity index 59%
copy from third_party/WebKit/LayoutTests/fast/repaint/push-block-with-first-line.html
copy to third_party/WebKit/LayoutTests/fast/repaint/push-block-with-first-line-expected.html
index f0a5848ea159b54d709a9120adebce62a7ae1fcd..dcc1d26ff16447e81292ed0c8d5e4a6837d26810 100644
--- a/third_party/WebKit/LayoutTests/fast/repaint/push-block-with-first-line.html
+++ b/third_party/WebKit/LayoutTests/fast/repaint/push-block-with-first-line-expected.html
@@ -5,19 +5,10 @@
 -->
 <script src="../../resources/ahem.js"></script>
 <script src="../../resources/run-after-layout-and-paint.js"></script>
-<script src="resources/text-based-repaint.js"></script>
 <style>
     body { font:20px Ahem; }
     .test { color:green; }
     .test::first-line { background:red; }
 </style>
-<div id="spacer" style="display:none; height:3em;"></div>
+<div id="spacer" style="height:3em;"></div>
 <div class="test">JOCULAR</div>
-<script>
-repaintTest = function() {
-    document.getElementById("spacer").style.display = "block";
-}
-runAfterLayoutAndPaint(function() {
-    runRepaintTest();
-});
-</script>