Show reasons why nodes are ignored in accessibility sidebar

LayoutTests/inspector-protocol/accessibility/accessibility-getRelationships-expected.txt

+CONSOLE WARNING: 'window.webkitStorageInfo' is deprecated. Please use 'navigator.webkitTemporaryStorage' or 'navigator.webkitPersistentStorage' instead.

[pfeldman, 2015/04/28 15:49:36]

This test will fail when these unrelated warnings are changed / removed.

[aboxhall, 2015/04/28 16:08:33]

Yes? And it will fail until then unless I add them in to the expectation, won't
it?

[aboxhall, 2015/04/28 18:14:20]

Done.

+CONSOLE WARNING: 'webkitIndexedDB' is deprecated. Please use 'indexedDB' instead.
 Lunch Options
 
 Thai
 Subway
 Jimmy Johns
 Radio Maria
 Rainbow Gardens
 Drink Options
 
 Water
 Tea
 Coffee
 Cola
 Ginger Ale
 {
   "id": "<int>",
   "result": {
     "accessibilityNode": {
       "nodeId": "<string>",
+      "ignored": false,
       "role": {
         "type": "role",
         "value": "radiogroup"
       },
       "properties": [
         {
           "name": "required",
           "value": {
             "type": "boolean",
             "value": false
@@ skipping 31 matching lines @@
         "value": "Lunch Options"
       }
     }
   }
 }
 {
   "id": "<int>",
   "result": {
     "accessibilityNode": {
       "nodeId": "<string>",
+      "ignored": false,
       "role": {
         "type": "role",
         "value": "radiogroup"
       },
       "properties": [
         {
           "name": "required",
           "value": {
             "type": "boolean",
             "value": false
@@ skipping 17 matching lines @@
         "value": "Drink Options"
       },
       "description": {
         "type": "string",
         "value": "Drink Options"
       }
     }
   }
 }