Fix repaint rects from fast/repaint/window-resize tests

LayoutTests/fast/repaint/resources/window-resize-repaint.js

 var testSizes = [
     { width: 200, height: 200 }, // initial size
     { width: 200, height: 300 }, // height increase
     { width: 300, height: 300 }, // width increase
     { width: 300, height: 250 }, // height decrease
     { width: 250, height: 250 }  // width decrease
     // Tests can add more testSizes.
 ];
 
 var sizeIndex = 0;
 
 function repaintTest() {
     window.resizeTo(testSizes[sizeIndex].width, testSizes[sizeIndex].height);
 }
 
 if (window.internals) {
     internals.settings.setOverlayScrollbarsEnabled(true);
     internals.settings.setMockScrollbarsEnabled(true);
 }
 
 if (window.testRunner) {
     testRunner.useUnfortunateSynchronousResizeMode();
+    testRunner.dumpAsText();
 
     window.onload = function() {
         window.resizeTo(testSizes[0].width, testSizes[0].height);
 
-        for (sizeIndex = 1; sizeIndex < testSizes.length; ++sizeIndex)
-            runRepaintTest();
+        var repaintRects = "";
+        for (sizeIndex = 1; sizeIndex < testSizes.length; ++sizeIndex) {
+            document.body.offsetTop;
+            internals.startTrackingRepaints(document);
+            repaintTest();
+            document.body.offsetTop;
+            repaintRects += window.internals.layerTreeAsText(document, window.internals.LAYER_TREE_INCLUDES_REPAINT_RECTS);

[ojan, 2014/05/09 03:19:31]

Nit: s/window.internals/internals/

[enne (OOO), 2014/05/09 18:01:38]

Done.

+            internals.stopTrackingRepaints(document);
+        }
+        testRunner.setCustomTextOutput(repaintRects);
     }
 }