Tweak priorities of paint invalidation reasons

third_party/WebKit/LayoutTests/platform/linux/svg/text/ems-display-none-expected.txt

 {
   "name": "Content Root Layer",
   "bounds": [800, 600],
   "children": [
     {
       "name": "LayoutView #document",
       "bounds": [800, 600],
       "contentsOpaque": true,
       "drawsContent": true,
       "paintInvalidations": [
         {
           "object": "LayoutSVGContainer g",
           "rect": [50, 54, 561, 86],
-          "reason": "bounds change"
+          "reason": "became visible"
         },
         {
           "object": "LayoutSVGInlineText #text",
           "rect": [50, 54, 561, 86],
           "reason": "layoutObject insertion"
         },
         {
           "object": "LayoutSVGInlineText #text",
           "rect": [50, 54, 561, 86],
           "reason": "layoutObject insertion"
         },
         {
           "object": "LayoutSVGInlineText #text",
           "rect": [50, 54, 561, 86],
           "reason": "layoutObject insertion"
         },
         {
           "object": "LayoutSVGRoot svg",
           "rect": [50, 54, 561, 86],
-          "reason": "bounds change"
+          "reason": "became visible"
         },
         {
           "object": "LayoutSVGTSpan tspan",
           "rect": [50, 54, 561, 86],
           "reason": "layoutObject insertion"
         },
         {
           "object": "LayoutSVGTSpan tspan id='tspan'",
           "rect": [50, 54, 561, 86],
           "reason": "layoutObject insertion"
         },
         {
           "object": "LayoutSVGText text id='text'",
           "rect": [50, 54, 561, 86],
           "reason": "layoutObject insertion"
         }
       ]
     }
   ],
   "objectPaintInvalidations": [
     {
       "object": "LayoutSVGRoot svg",
-      "reason": "bounds change"
+      "reason": "became visible"
     },
     {
       "object": "LayoutSVGContainer g",
-      "reason": "bounds change"
+      "reason": "became visible"
     },
     {
       "object": "LayoutSVGText text id='text'",
       "reason": "layoutObject insertion"
     },
     {
       "object": "RootInlineBox",
       "reason": "layoutObject insertion"
     },
     {
@@ skipping 32 matching lines @@
       "object": "LayoutSVGInlineText #text",
       "reason": "layoutObject insertion"
     },
     {
       "object": "InlineTextBox 'Two lines of text should be visible.'",
       "reason": "layoutObject insertion"
     }
   ]
 }