Paint collapsed borders of a table as one display item

third_party/WebKit/LayoutTests/paint/invalidation/table-section-repaint-expected.txt

Index: third_party/WebKit/LayoutTests/paint/invalidation/table-section-repaint-expected.txt
diff --git a/third_party/WebKit/LayoutTests/paint/invalidation/table-section-repaint-expected.txt b/third_party/WebKit/LayoutTests/paint/invalidation/table-section-repaint-expected.txt
index 341420752e29aa67d209f2edc0ada7e92877999c..ca5147f1c31358aa693779df5d29704bbb3d69c9 100644
--- a/third_party/WebKit/LayoutTests/paint/invalidation/table-section-repaint-expected.txt
+++ b/third_party/WebKit/LayoutTests/paint/invalidation/table-section-repaint-expected.txt
@@ -7,6 +7,11 @@
       "drawsContent": true,
       "paintInvalidations": [
         {
+          "object": "LayoutTable TABLE",
+          "rect": [8, 308, 60, 83],
+          "reason": "forced by layout"
+        },
+        {
           "object": "LayoutTableCell TD class='half'",
           "rect": [8, 353, 60, 38],
           "reason": "bounds change"
@@ -100,11 +105,6 @@
           "object": "LayoutTableCell TD class='red half'",
           "rect": [8, 8, 60, 30],
           "reason": "bounds change"
-        },
-        {
-          "object": "LayoutTable TABLE",
-          "rect": [8, 372, 60, 19],
-          "reason": "incremental"
         }
       ]
     }
@@ -172,7 +172,7 @@
     },
     {
       "object": "LayoutTable TABLE",
-      "reason": "incremental"
+      "reason": "forced by layout"
     },
     {
       "object": "LayoutTableRow TR",