Add a DevTools command to create an isolated world for a given frame

third_party/WebKit/Source/core/inspector/browser_protocol.json

 {
     "version": { "major": "1", "minor": "2" },
     "domains": [{
         "domain": "Inspector",
         "experimental": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications."
@@ skipping 502 matching lines @@
             },
             {
                 "name": "getLayoutMetrics",
                 "description": "Returns metrics relating to the layouting of the page, such as viewport bounds/scale.",
                 "experimental": true,
                 "returns": [
                     { "name": "layoutViewport", "$ref": "LayoutViewport", "description": "Metrics relating to the layout viewport." },
                     { "name": "visualViewport", "$ref": "VisualViewport", "description": "Metrics relating to the visual viewport." },
                     { "name": "contentSize", "$ref": "DOM.Rect", "description": "Size of scrollable area."}
                 ]
+            },
+            {
+                "name": "createIsolatedWorld",
+                "description": "Creates an isolated world for the given frame.",
+                "experimental": true,
+                "parameters": [
+                    { "name": "frameId", "$ref": "FrameId", "description": "Id of the frame in which the isolated world should be created." },
+                    { "name": "worldName", "type": "string", "optional": true, "description": "An optional name which is reported in the Execution Context." },
+                    { "name": "grantUniveralAccess", "type": "boolean", "optional": true, "description": "Whether or not universal access should be granted to the isolated world. This is a powerful option, use with caution." }
+                ]
             }
         ],
         "events": [
             {
                 "name": "domContentEventFired",
                 "parameters": [
                     { "name": "timestamp", "type": "number" }
                 ]
             },
             {
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                 "parameters": [
                     { "name": "windowId", "$ref": "WindowID", "description": "Browser window id." }
                 ],
                 "returns": [
                     { "name": "bounds", "$ref": "Bounds", "description": "Bounds information of the window. When window state is 'minimized', the restored window position and size are returned." }
                 ]
             }
         ]
     }]
 }