Reduce invalidation on children-needs-layout containers

LayoutTests/fast/repaint/block-shift-repaint-expected.txt

Index: LayoutTests/fast/repaint/block-shift-repaint-expected.txt
diff --git a/LayoutTests/fast/repaint/block-shift-repaint-expected.txt b/LayoutTests/fast/repaint/block-shift-repaint-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8183a6e7986c8a6e72ffdf9df68df1a263ef206a
--- /dev/null
+++ b/LayoutTests/fast/repaint/block-shift-repaint-expected.txt
@@ -0,0 +1,33 @@
+(GraphicsLayer
+  (bounds 800.00 600.00)
+  (children 1
+    (GraphicsLayer
+      (bounds 800.00 600.00)
+      (contentsOpaque 1)
+      (drawsContent 1)
+      (repaint rects
+        (rect 48.00 308.00 10.00 15.00)
+        (rect 8.00 353.00 60.00 38.00)
+        (rect 8.00 338.00 60.00 38.00)
+        (rect 8.00 323.00 60.00 30.00)
+        (rect 8.00 308.00 60.00 30.00)
+        (rect 8.00 248.00 60.00 30.00)
+        (rect 8.00 218.00 60.00 30.00)
+        (rect 8.00 218.00 60.00 30.00)
+        (rect 8.00 188.00 60.00 30.00)
+        (rect 8.00 188.00 60.00 30.00)
+        (rect 8.00 158.00 60.00 30.00)
+        (rect 8.00 128.00 60.00 30.00)
+        (rect 8.00 128.00 60.00 30.00)
+        (rect 8.00 98.00 60.00 30.00)
+        (rect 8.00 98.00 60.00 30.00)
+        (rect 8.00 68.00 60.00 30.00)
+        (rect 8.00 38.00 60.00 30.00)
+        (rect 8.00 38.00 60.00 30.00)
+        (rect 8.00 8.00 60.00 30.00)
+        (rect 8.00 8.00 60.00 30.00)
+      )
+    )
+  )
+)
+