Convert repaintRectsAsText callers to text-based-repaint.js

LayoutTests/platform/win/css3/flexbox/repaint-expected.txt

Index: LayoutTests/platform/win/css3/flexbox/repaint-expected.txt
diff --git a/LayoutTests/platform/win/css3/flexbox/repaint-expected.txt b/LayoutTests/platform/win/css3/flexbox/repaint-expected.txt
index a5378e6ad7187125b02e090de1096e20b18016f1..99a6d2906e00663ee22b85073aeecc16f476ff0c 100644
--- a/LayoutTests/platform/win/css3/flexbox/repaint-expected.txt
+++ b/LayoutTests/platform/win/css3/flexbox/repaint-expected.txt
@@ -18,5 +18,14 @@ Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean laoreet dolor id
   (rect 8 228 784 60)
   (rect 8 228 784 60)
   (rect 0 236 800 60)
+  (rect 139 128 9 100)

[enne (OOO), 2014/04/30 01:08:14]

I verified that this is due to the "document.body.offsetTop;" call that's a part
of the text-based-repaint.  I don't think it's legit to ask about repaint rects
without doing a layout.

+  (rect 8 128 140 100)
+  (rect 148 128 644 100)
+  (rect 148 128 653 100)
+  (rect 148 128 644 100)
+  (rect 148 128 653 100)
+  (rect 8 128 131 100)
+  (rect 148 128 644 100)
+  (rect 139 128 653 100)
 )