Reland of Paint collapsed borders of a table as one display item

third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-colgroup-border-color-expected.txt

Index: third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-colgroup-border-color-expected.txt
diff --git a/third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-colgroup-border-color-expected.txt b/third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-colgroup-border-color-expected.txt
index 71449ce2294d270afcf168fa2fdb0c6882f57314..5629d3381ad1a549929ebb94fe3d4cfbebca7b35 100644
--- a/third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-colgroup-border-color-expected.txt
+++ b/third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-colgroup-border-color-expected.txt
@@ -6,6 +6,11 @@
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
+        {
+          "object": "LayoutTable TABLE",
+          "rect": [7, 7, 167, 104],
+          "reason": "invalidate paint rectangle"
+        },
         {
           "object": "LayoutTableCol COLGROUP id='colgroup'",
           "rect": [8, 8, 166, 102],
@@ -16,28 +21,8 @@
   ],
   "objectPaintInvalidations": [
     {
-      "object": "LayoutTableCell TD",
-      "reason": "style change"
-    },
-    {
-      "object": "LayoutTableCell TD",
-      "reason": "style change"
-    },
-    {
-      "object": "LayoutTableCell TD",
-      "reason": "style change"
-    },
-    {
-      "object": "LayoutTableCell TD",
-      "reason": "style change"
-    },
-    {
-      "object": "LayoutTableCell TD",
-      "reason": "style change"
-    },
-    {
-      "object": "LayoutTableCell TD",
-      "reason": "style change"
+      "object": "LayoutTable TABLE",
+      "reason": "invalidate paint rectangle"
     },
     {
       "object": "LayoutTableCol COLGROUP id='colgroup'",