Don't let PaintInvalidationLocationChange shadow other reasons

third_party/WebKit/LayoutTests/platform/linux/fast/repaint/offset-change-wrong-invalidation-with-float-expected.txt

 {
   "bounds": [800, 600],
   "children": [
     {
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
         {
           "object": "LayoutBlockFlow (positioned) UL id='submenu'",
           "rect": [48, 94, 40, 20],
-          "reason": "location change"
+          "reason": "bounds change"
         },
         {
           "object": "LayoutBlockFlow (positioned) UL id='submenu'",
           "rect": [48, -156, 40, 20],
-          "reason": "location change"
+          "reason": "bounds change"
         },
         {
           "object": "LayoutListItem LI",
           "rect": [70, 94, 18, 20],
-          "reason": "location change"
+          "reason": "bounds change"
         },
         {
           "object": "LayoutListItem LI",
           "rect": [70, -156, 18, 20],
-          "reason": "location change"
+          "reason": "bounds change"
         },
         {
           "object": "LayoutListMarker (anonymous)",
           "rect": [70, 94, 7, 19],
-          "reason": "location change"
+          "reason": "bounds change"
         },
         {
           "object": "LayoutListMarker (anonymous)",
           "rect": [70, -156, 7, 19],
-          "reason": "location change"
+          "reason": "bounds change"
         },
         {
           "object": "RootInlineBox",
           "reason": "full"
         }
       ],
       "children": [
         {
           "position": [30, 44],
           "transformOrigin": [18, 10],
@@ skipping 10 matching lines @@
         {
           "position": [30, 44],
           "bounds": [18, 20],
           "drawsContent": true
         }
       ]
     }
   ]
 }