DevTools: Clean up the Event Listeners pane data representation

Source/devtools/protocol.json

Index: Source/devtools/protocol.json
diff --git a/Source/devtools/protocol.json b/Source/devtools/protocol.json
index 3c0949c46ed7cb045b44311adc79dcac6aaf92df..49d248c99629209adb234e54e39e6feda37bee11 100644
--- a/Source/devtools/protocol.json
+++ b/Source/devtools/protocol.json
@@ -2166,9 +2166,7 @@
                     { "name": "useCapture", "type": "boolean", "description": "<code>EventListener</code>'s useCapture." },
                     { "name": "isAttribute", "type": "boolean", "description": "<code>EventListener</code>'s isAttribute." },
                     { "name": "nodeId", "$ref": "NodeId", "description": "Target <code>DOMNode</code> id." },
-                    { "name": "handlerBody", "type": "string", "description": "Event handler function body." },
                     { "name": "location", "$ref": "Debugger.Location", "description": "Handler code location." },
-                    { "name": "sourceName", "type": "string", "optional": true, "description": "Source script URL." },
                     { "name": "handler", "$ref": "Runtime.RemoteObject", "optional": true, "description": "Event handler function value." }
                 ],
                 "description": "DOM interaction is implemented in terms of mirror objects that represent the actual DOM nodes. DOMNode is a base node mirror type."