[DevTools] Show blackbox tab in settings always

third_party/WebKit/Source/devtools/front_end/settings/module.json

 {
     "extensions": [
         {
             "type": "@WebInspector.ActionDelegate",
             "category": "Settings",
             "actionId": "settings.show",
             "title": "Settings",
             "className": "WebInspector.SettingsScreen.ActionDelegate",
             "bindings": [
                 {
@@ skipping 62 matching lines @@
             "order": "2",
             "experiment": "*",
             "className": "WebInspector.ExperimentsSettingsTab"
         },
         {
             "type": "view",
             "location": "settings-view",
             "id": "blackbox",
             "title": "Blackboxing",
             "order": "3",
-            "experiment": "*",
             "className": "WebInspector.FrameworkBlackboxSettingsTab"
         },
         {
             "type": "@WebInspector.ViewLocationResolver",
             "name": "settings-view",
             "className": "WebInspector.SettingsScreen"
         }
     ],
     "dependencies": [
         "components"
     ],
     "scripts": [
         "EditFileSystemView.js",
         "SettingsScreen.js",
         "FrameworkBlackboxSettingsTab.js"
     ],
     "resources": [
         "editFileSystemView.css",
         "frameworkBlackboxSettingsTab.css",
         "settingsScreen.css"
     ]
 }