Let padding change always trigger layout and full paint invalidation

third_party/WebKit/LayoutTests/paint/invalidation/box-sizing-expected.txt

Index: third_party/WebKit/LayoutTests/paint/invalidation/box-sizing-expected.txt
diff --git a/third_party/WebKit/LayoutTests/paint/invalidation/box-sizing-expected.txt b/third_party/WebKit/LayoutTests/paint/invalidation/box-sizing-expected.txt
index 363e3a438e8b9d1b5928b8ef51b2bfba3d70c562..d1b55dacaa2c39d936ecb068eb1afb597932ca7f 100644
--- a/third_party/WebKit/LayoutTests/paint/invalidation/box-sizing-expected.txt
+++ b/third_party/WebKit/LayoutTests/paint/invalidation/box-sizing-expected.txt
@@ -8,8 +8,8 @@
       "paintInvalidations": [
         {
           "object": "LayoutBlockFlow (positioned) DIV id='target2' class='border-box'",
-          "rect": [0, 200, 440, 140],
-          "reason": "content box change"
+          "rect": [0, 280, 440, 60],
+          "reason": "incremental"
         },
         {
           "object": "LayoutBlockFlow (positioned) DIV id='target1' class='content-box'",
@@ -17,6 +17,11 @@
           "reason": "incremental"
         },
         {
+          "object": "LayoutBlockFlow (positioned) DIV id='target2' class='border-box'",
+          "rect": [380, 200, 60, 140],
+          "reason": "incremental"
+        },
+        {
           "object": "LayoutBlockFlow (positioned) DIV id='target1' class='content-box'",
           "rect": [380, 0, 60, 140],
           "reason": "incremental"
@@ -31,7 +36,7 @@
     },
     {
       "object": "LayoutBlockFlow (positioned) DIV id='target2' class='border-box'",
-      "reason": "content box change"
+      "reason": "incremental"
     }
   ]
 }