Push updates to inspector when windows are added, destroyed or reorganized

components/ui_devtools/protocol.json

 {
     "domains": [
         {
             "commands": [
                 {
                     "description": "Enables DOM agent for the given page.",
                     "name": "enable"
                 },
                 {
                     "description": "Disables DOM agent for the given page.",
                     "name": "disable"
                 },
                 {
                     "description": "Returns the root DOM node to the caller.",
                     "name": "getDocument",
                     "returns": [
                         {
                             "$ref": "Node",
                             "description": "Resulting node.",
                             "name": "root"
                         }
                     ]
                 }
             ],
+            "events": [
+                {
+                    "name": "childNodeInserted",
+                    "parameters": [
+                        {
+                            "description": "Id of the node that has changed.",
+                            "name": "parentNodeId",
+                            "$ref": "NodeId"
+                        },
+                        {
+                            "description": "Id of the previous sibling.",

[sadrul, 2016/11/04 15:39:17]

Document in the description that 0 means at the beginning. e.g.

"Id if the previous sibling (0 if this is at the beginning of the list)"

[Sarmad Hashmi, 2016/11/04 16:03:50]

Done.

+                            "name": "previousNodeId",
+                            "$ref": "NodeId"
+                        },
+                        {
+                            "description": "Inserted node data.",
+                            "name": "node",
+                            "$ref": "Node"
+                        }
+                    ],
+                    "description": "Mirrors <code>DOMNodeInserted</code> event."
+                },
+                {
+                    "name": "childNodeRemoved",
+                    "parameters": [
+                        {
+                            "description": "Parent id.",
+                            "name": "parentNodeId",
+                            "$ref": "NodeId"
+                        },
+                        {
+                            "description": "Id of the node that has been removed.",
+                            "name": "nodeId",
+                            "$ref": "NodeId"
+                        }
+                    ],
+                    "description": "Mirrors <code>DOMNodeRemoved</code> event."
+                }
+            ],
             "domain": "DOM",
             "types": [
                 {
                     "description": "Unique DOM node identifier.",
                     "id": "NodeId",
                     "type": "integer"
                 },
                 {
                     "description": "DOM interaction is implemented in terms of mirror objects that represent the actual DOM nodes. DOMNode is a base node mirror type.",
                     "id": "Node",
@@ skipping 53 matching lines @@
                     "type": "object"
                 }
             ]
         }
     ],
     "version": {
         "major": "1",
         "minor": "0"
     }
 }