Fix paint invalidation rect tracking within composited scrolling layers.

LayoutTests/paint/invalidation/invalidate-after-composited-scroll-expected.txt

Index: LayoutTests/paint/invalidation/invalidate-after-composited-scroll-expected.txt
diff --git a/LayoutTests/platform/win/compositing/overflow/updating-scrolling-content-expected.txt b/LayoutTests/paint/invalidation/invalidate-after-composited-scroll-expected.txt
similarity index 59%
copy from LayoutTests/platform/win/compositing/overflow/updating-scrolling-content-expected.txt
copy to LayoutTests/paint/invalidation/invalidate-after-composited-scroll-expected.txt
index ccfbc3beba9a8c643e9295d7df7a589bb466c916..f8167017056f80b3624a93b5cafb7aa057d2fe57 100644
--- a/LayoutTests/platform/win/compositing/overflow/updating-scrolling-content-expected.txt
+++ b/LayoutTests/paint/invalidation/invalidate-after-composited-scroll-expected.txt
@@ -7,29 +7,27 @@
       "drawsContent": true,
       "children": [
         {
-          "position": [8, 8],
+          "position": [300, 300],
           "bounds": [200, 200],
           "drawsContent": true,
           "repaintRects": [
-            [0, 0, 185, 200],
-            [0, -1000, 185, 200]
+            [0, 50, 100, 100]
           ],
           "paintInvalidationClients": [
-            "LayoutBlockFlow DIV id='indicator'"
+            "LayoutBlockFlow DIV id='target'"
           ],
           "children": [
             {
-              "bounds": [185, 185],
+              "bounds": [185, 200],
               "children": [
                 {
-                  "bounds": [185, 1200],
+                  "bounds": [185, 4900],
                   "drawsContent": true,
                   "repaintRects": [
-                    [0, 0, 185, 200],
-                    [0, -1000, 185, 200]
+                    [0, 2400, 100, 100]
                   ],
                   "paintInvalidationClients": [
-                    "LayoutBlockFlow DIV id='indicator'"
+                    "LayoutBlockFlow DIV id='target'"
                   ],
                   "children": [
                     {
@@ -42,25 +40,15 @@
             {
               "children": [
                 {
-                  "position": [0, 185],
-                  "bounds": [185, 15],
-                  "drawsContent": true
-                },
-                {
                   "position": [185, 0],
-                  "bounds": [15, 185],
+                  "bounds": [15, 200],
                   "drawsContent": true,
                   "repaintRects": [
-                    [0, 0, 15, 185]
+                    [0, 0, 15, 200]
                   ],
                   "paintInvalidationClients": [
                     "##ALL##"
                   ]
-                },
-                {
-                  "position": [185, 185],
-                  "bounds": [15, 15],
-                  "drawsContent": true
                 }
               ]
             }