Fix visual rect for background box painting in composited scrollers.

third_party/WebKit/LayoutTests/fast/repaint/overflow-scroll-local-background-text-color-change-expected.txt

Index: third_party/WebKit/LayoutTests/fast/repaint/overflow-scroll-local-background-text-color-change-expected.txt
diff --git a/third_party/WebKit/LayoutTests/paint/invalidation/composited-overflow-with-local-background-expected.txt b/third_party/WebKit/LayoutTests/fast/repaint/overflow-scroll-local-background-text-color-change-expected.txt
similarity index 67%
copy from third_party/WebKit/LayoutTests/paint/invalidation/composited-overflow-with-local-background-expected.txt
copy to third_party/WebKit/LayoutTests/fast/repaint/overflow-scroll-local-background-text-color-change-expected.txt
index 7ca439fcc184a32d7f64e2ec476ff0b66d8e093c..35706f683b3e5a6dfaee0a3abd3b29a4028ce21e 100644
--- a/third_party/WebKit/LayoutTests/paint/invalidation/composited-overflow-with-local-background-expected.txt
+++ b/third_party/WebKit/LayoutTests/fast/repaint/overflow-scroll-local-background-text-color-change-expected.txt
@@ -14,7 +14,7 @@
           "bounds": [200, 200],
           "shouldFlattenTransform": false,
           "drawsContent": true,
-          "backgroundColor": "#008000",
+          "backgroundColor": "#0000FF",
           "paintInvalidations": [
             {
               "object": "LayoutBlockFlow DIV id='scroller'",
@@ -30,13 +30,13 @@
               "children": [
                 {
                   "name": "Scrolling Contents Layer",
-                  "bounds": [185, 300],
+                  "bounds": [185, 552],
                   "contentsOpaque": true,
                   "drawsContent": true,
                   "paintInvalidations": [
                     {
                       "object": "LayoutBlockFlow DIV id='scroller'",
-                      "rect": [0, 0, 185, 300],
+                      "rect": [0, 0, 185, 552],
                       "reason": "style change"
                     }
                   ]
@@ -50,12 +50,31 @@
                 {
                   "name": "Horizontal Scrollbar Layer",
                   "position": [0, 185],
-                  "bounds": [185, 15]
+                  "bounds": [185, 15],
+                  "paintInvalidations": [
+                    {
+                      "object": "Horizontal Scrollbar Layer",
+                      "rect": [0, 0, 185, 15],
+                      "reason": "full"
+                    }
+                  ]
                 },
                 {
                   "name": "Vertical Scrollbar Layer",
                   "position": [185, 0],
-                  "bounds": [15, 185]
+                  "bounds": [15, 185],
+                  "paintInvalidations": [
+                    {
+                      "object": "Vertical Scrollbar Layer",
+                      "rect": [0, 0, 15, 185],
+                      "reason": "full"
+                    },
+                    {
+                      "object": "Vertical Scrollbar Layer",
+                      "rect": [0, 0, 15, 185],
+                      "reason": "full"
+                    }
+                  ]
                 },
                 {
                   "name": "Scroll Corner Layer",
@@ -72,6 +91,10 @@
   ],
   "objectPaintInvalidations": [
     {
+      "object": "Scrolling Contents Layer",
+      "reason": "style change"
+    },
+    {
       "object": "LayoutBlockFlow DIV id='scroller'",
       "reason": "style change"
     }