[DevTools] Unflake some of inspector-protocol tests

third_party/WebKit/LayoutTests/inspector-protocol/accessibility/accessibility-nameSources-input-expected.txt

 
 {
   "nodeId": "<string>",
   "ignored": false,
   "role": {
     "type": "role",
     "value": "textbox"
   },
   "name": {
     "type": "computedString",
@@ skipping 930 matching lines @@
         "attribute": "aria-labelledby"
       },
       {
         "type": "attribute",
         "attribute": "aria-label"
       },
       {
         "type": "relatedElement",
         "value": {
           "type": "computedString",
-          "value": "label-wrapping-text10 "
+          "value": "label-wrapping-text10"
         },
         "nativeSource": "labelwrapped",
         "nativeSourceValue": {
           "type": "nodeList",
           "relatedNodes": [
             {
               "backendDOMNodeId": "<number>",
-              "text": "label-wrapping-text10 "
+              "text": "label-wrapping-text10"
             }
           ]
         }
       },
       {
         "type": "placeholder",
         "value": {
           "type": "computedString",
           "value": "text10-placeholder"
         },
@@ skipping 60 matching lines @@
         "type": "boolean",
         "value": false
       }
     },
     {
       "name": "labelledby",
       "value": {
         "type": "nodeList",
         "relatedNodes": [
           {
-            "text": "label-wrapping-text10 ",
+            "text": "label-wrapping-text10",
             "nodeResult": "label"
           }
         ]
       }
     }
   ],
   "domNode": "input#text10"
 }
 {
   "nodeId": "<string>",
@@ skipping 180 matching lines @@
       "name": "required",
       "value": {
         "type": "boolean",
         "value": false
       }
     }
   ],
   "domNode": "input#text12"
 }