Tweak priorities of paint invalidation reasons

third_party/WebKit/LayoutTests/platform/linux/fast/repaint/shift-relative-positioned-container-with-image-addition-expected.txt

 {
   "name": "Content Root Layer",
   "bounds": [785, 836],
   "children": [
     {
       "name": "LayoutView #document",
       "bounds": [785, 836],
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
@@ skipping 60 matching lines @@
     {
       "object": "RootInlineBox",
       "reason": "bounds change"
     },
     {
       "object": "LayoutImage IMG",
       "reason": "bounds change"
     },
     {
       "object": "LayoutText #text",
-      "reason": "bounds change"
+      "reason": "location change"
     },
     {
       "object": "VerticalScrollbar",
       "reason": "scroll"
     },
     {
       "object": "LayoutView #document",
       "reason": "location change"
     },
     {
       "object": "LayoutBlockFlow HTML",
       "reason": "forced by layout"
     },
     {
       "object": "LayoutBlockFlow BODY",
       "reason": "location change"
     },
     {
       "object": "LayoutView #document",
       "reason": "scroll"
     }
   ]
 }