Paint collapsed borders of a table as one display item

third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-col-border-width-expected.txt

Index: third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-col-border-width-expected.txt
diff --git a/third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-col-border-width-expected.txt b/third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-col-border-width-expected.txt
index 5ba207001cbfe1cddc497891c1d54433d3ebc494..e54cf9ba8367fe74b8aef3d3b02a29a67de568cd 100644
--- a/third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-col-border-width-expected.txt
+++ b/third_party/WebKit/LayoutTests/paint/invalidation/table/cached-change-col-border-width-expected.txt
@@ -7,14 +7,14 @@
       "drawsContent": true,
       "paintInvalidations": [
         {
-          "object": "LayoutTableCol COL id='col'",
+          "object": "LayoutTable TABLE",
           "rect": [8, 8, 113, 104],
-          "reason": "style change"
+          "reason": "forced by layout"
         },
         {
-          "object": "LayoutTable TABLE",
-          "rect": [8, 108, 113, 4],
-          "reason": "incremental"
+          "object": "LayoutTableCol COL id='col'",
+          "rect": [8, 8, 113, 104],
+          "reason": "style change"
         },
         {
           "object": "LayoutTableCell TD",
@@ -50,35 +50,14 @@
           "object": "LayoutTableCell TD",
           "rect": [63, 59, 54, 51],
           "reason": "bounds change"
-        },
-        {
-          "object": "LayoutTable TABLE",
-          "rect": [116, 8, 5, 104],
-          "reason": "incremental"
         }
       ]
     }
   ],
   "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": "LayoutTable TABLE",
-      "reason": "incremental"
+      "reason": "forced by layout"
     },
     {
       "object": "LayoutTableCol COL id='col'",