Show closed/open shadow root in inspector

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications.",
@@ skipping 2238 matching lines @@
                     "scrollbar-track-piece",
                     "scrollbar-corner",
                     "resizer",
                     "input-list-button"
                 ],
                 "description": "Pseudo element type."
             },
             {
                 "id": "ShadowRootType",
                 "type": "string",
-                "enum": ["user-agent", "author"],
+                "enum": ["user-agent", "open", "closed"],
                 "description": "Shadow root type."
             },
             {
                 "id": "Node",
                 "type": "object",
                 "properties": [
                     { "name": "nodeId", "$ref": "NodeId", "description": "Node identifier that is passed into the rest of the DOM messages as the <code>nodeId</code>. Backend will only push node with given <code>id</code> once. It is aware of all requested nodes and will only fire DOM events for nodes known to the client." },
                     { "name": "nodeType", "type": "integer", "description": "<code>Node</code>'s nodeType." },
                     { "name": "nodeName", "type": "string", "description": "<code>Node</code>'s nodeName." },
                     { "name": "localName", "type": "string", "description": "<code>Node</code>'s localName." },
@@ skipping 2901 matching lines @@
                 ],
                 "returns": [
                     { "name": "accessibilityNode", "$ref": "AXNode", "description": "The <code>Accessibility.AXNode</code> for this DOM node, if it exists.", "optional": true }
                 ],
                 "description": "Fetches the accessibility node for this DOM node, if it exists.",
                 "hidden": true
             }
         ]
     }]
 }