Replace coversExtraPixels with simpler logic

third_party/WebKit/LayoutTests/paint/invalidation/resize-with-border-clipped-expected.txt

Index: third_party/WebKit/LayoutTests/paint/invalidation/resize-with-border-clipped-expected.txt
diff --git a/third_party/WebKit/LayoutTests/paint/invalidation/resize-with-border-clipped-expected.txt b/third_party/WebKit/LayoutTests/paint/invalidation/resize-with-border-clipped-expected.txt
index 06edcf73430bebcb46eac9d76de92def7d05edae..5fca21b6b72892f4d1d6ddbdf2cd60ea076eb92f 100644
--- a/third_party/WebKit/LayoutTests/paint/invalidation/resize-with-border-clipped-expected.txt
+++ b/third_party/WebKit/LayoutTests/paint/invalidation/resize-with-border-clipped-expected.txt
@@ -8,13 +8,8 @@
       "paintInvalidations": [
         {
           "object": "LayoutBlockFlow DIV id='target'",
-          "rect": [100, 210, 200, 90],
-          "reason": "incremental"
-        },
-        {
-          "object": "LayoutBlockFlow DIV id='target'",
-          "rect": [210, 100, 90, 200],
-          "reason": "incremental"
+          "rect": [100, 100, 200, 200],
+          "reason": "border box change"
         }
       ]
     }
@@ -22,7 +17,7 @@
   "objectPaintInvalidations": [
     {
       "object": "LayoutBlockFlow DIV id='target'",
-      "reason": "incremental"
+      "reason": "border box change"
     }
   ]
 }