Devtools: convert pair of booleans in setInspectModeEnabled into enum parameter

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications.",
@@ skipping 2350 matching lines @@
                     { "name": "displayAsMaterial", "type": "boolean", "optional": true, "hidden": true},
                     { "name": "contentColor", "$ref": "RGBA", "optional": true, "description": "The content box highlight fill color (default: transparent)." },
                     { "name": "paddingColor", "$ref": "RGBA", "optional": true, "description": "The padding highlight fill color (default: transparent)." },
                     { "name": "borderColor", "$ref": "RGBA", "optional": true, "description": "The border highlight fill color (default: transparent)." },
                     { "name": "marginColor", "$ref": "RGBA", "optional": true, "description": "The margin highlight fill color (default: transparent)." },
                     { "name": "eventTargetColor", "$ref": "RGBA", "optional": true, "hidden": true, "description": "The event target element highlight fill color (default: transparent)." },
                     { "name": "shapeColor", "$ref": "RGBA", "optional": true, "hidden": true, "description": "The shape outside fill color (default: transparent)." },
                     { "name": "shapeMarginColor", "$ref": "RGBA", "optional": true, "hidden": true, "description": "The shape margin fill color (default: transparent)." }
                 ],
                 "description": "Configuration data for the highlighting of page elements."
+            },
+            {
+                "id": "InspectMode",
+                "type": "string",
+                "hidden": true,
+                "enum": [
+                    "searchForNode",
+                    "searchForUAShadowDOM",
+                    "none"
+                ]
             }
         ],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables DOM agent for the given page."
             },
             {
                 "name": "disable",
                 "description": "Disables DOM agent for the given page."
@@ skipping 143 matching lines @@
                 "name": "requestNode",
                 "parameters": [
                     { "name": "objectId", "$ref": "Runtime.RemoteObjectId", "description": "JavaScript object id to convert into node." }
                 ],
                 "returns": [
                     { "name": "nodeId", "$ref": "NodeId", "description": "Node id for given object." }
                 ],
                 "description": "Requests that the node is sent to the caller given the JavaScript node object reference. All nodes that form the path from the node to the root are also sent to the client as a series of <code>setChildNodes</code> notifications."
             },
             {
-                "name": "setInspectModeEnabled",
+                "name": "setInspectMode",
                 "hidden": true,
                 "parameters": [
-                    { "name": "enabled", "type": "boolean", "description": "True to enable inspection mode, false to disable it." },
-                    { "name": "inspectUAShadowDOM", "type": "boolean", "optional": true, "description": "True to enable inspection mode for user agent shadow DOM." },
+                    { "name": "mode", "$ref": "InspectMode", "description": "Set an inspection mode." },
                     { "name": "highlightConfig", "$ref": "HighlightConfig", "optional": true, "description": "A descriptor for the highlight appearance of hovered-over nodes. May be omitted if <code>enabled == false</code>." }
                 ],
                 "description": "Enters the 'inspect' mode. In this mode, elements that user is hovering over are highlighted. Backend then generates 'inspectNodeRequested' event upon element selection."
             },
             {
                 "name": "highlightRect",
                 "parameters": [
                     { "name": "x", "type": "integer", "description": "X coordinate" },
                     { "name": "y", "type": "integer", "description": "Y coordinate" },
                     { "name": "width", "type": "integer", "description": "Rectangle width" },
@@ skipping 195 matching lines @@
         "events": [
             {
                 "name": "documentUpdated",
                 "description": "Fired when <code>Document</code> has been totally updated. Node ids are no longer valid."
             },
             {
                 "name": "inspectNodeRequested",
                 "parameters": [
                     { "name": "backendNodeId", "$ref": "BackendNodeId", "description": "Id of the node to inspect." }
                 ],
-                "description": "Fired when the node should be inspected. This happens after call to <code>setInspectModeEnabled</code>.",
+                "description": "Fired when the node should be inspected. This happens after call to <code>setInspectMode</code>.",
                 "hidden" : true
             },
             {
                 "name": "setChildNodes",
                 "parameters": [
                     { "name": "parentId", "$ref": "NodeId", "description": "Parent node id to populate with children." },
                     { "name": "nodes", "type": "array", "items": { "$ref": "Node" }, "description": "Child nodes array." }
                 ],
                 "description": "Fired when backend wants to provide client with the missing DOM structure. This happens upon most of the calls requesting node ids."
             },
@@ skipping 2447 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
             }
         ]
     }]
 }