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

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

Index: third_party/WebKit/Source/core/inspector/browser_protocol.json
diff --git a/third_party/WebKit/Source/core/inspector/browser_protocol.json b/third_party/WebKit/Source/core/inspector/browser_protocol.json
index ccc2d2b3bd2516d1cf26cac51ef0bef53e2daa0f..be81d8091cae0377ad5e309a23f3e140ad49e646 100644
--- a/third_party/WebKit/Source/core/inspector/browser_protocol.json
+++ b/third_party/WebKit/Source/core/inspector/browser_protocol.json
@@ -507,6 +507,17 @@
                     { "name": "visualViewport", "$ref": "VisualViewport", "description": "Metrics relating to the visual viewport." },
                     { "name": "contentSize", "$ref": "DOM.Rect", "description": "Size of scrollable area."}
                 ]
+            },
+            {
+                "name": "ensureIsolatedWorld",
+                "description": "Ensures an isolated world for the given frame exists,",
+                "experimental": true,
+                "parameters": [
+                    { "name": "frameId", "$ref": "FrameId", "description": "Id of the frame in which the isolated world should be created." },
+                    { "name": "worldId", "type": "integer", "description": "Id of the isolated world. Must be >= 1 and < 1<<29." },
+                    { "name": "securityOrigin", "type": "string", "optional": true, "description": "Associates the isolated world with a particular security origin." },
+                    { "name": "contentSecurityPolicy", "type": "string", "optional": true, "description": "Associates the isolated world with a particular Content Security Policy." }
+                ]
             }
         ],
         "events": [