Modify devtools to show passive event listeners.

third_party/WebKit/Source/platform/v8_inspector/InjectedScriptSource.js

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 1375 matching lines @@
 
     /**
      * @param {!Node} node
      * @return {!Object|undefined}
      */
     getEventListeners: function(node)
     {
         var result = nullifyObjectProto(InjectedScriptHost.getEventListeners(node));
         if (!result)
             return;
-        /** @this {{type: string, listener: function(), useCapture: boolean}} */
+        /** @this {{type: string, listener: function(), useCapture: boolean, passive: boolean}} */
         var removeFunc = function()
         {
-            node.removeEventListener(this.type, this.listener, this.useCapture);
+            function eventListenerOptions(capture, passive) {

[pfeldman, 2016/03/30 17:43:05]

ditto

[dtapuska, 2016/03/30 20:59:48]

Likewise; if I JSDoc this it will fail.

+                if (passive) {
+                    return {"capture": capture, "passive": passive};
+                } else {
+                    return capture;
+                }
+            }
+            node.removeEventListener(this.type, this.listener, eventListenerOptions(this.useCapture, this.passive));
         }
         for (var type in result) {
             var listeners = result[type];
             for (var i = 0, listener; listener = listeners[i]; ++i) {
                 listener["type"] = type;
                 listener["remove"] = removeFunc;
             }
         }
         return result;
     },
@@ skipping 65 matching lines @@
      */
     _logEvent: function(event)
     {
         inspectedGlobalObject.console.log(event.type, event);
     }
 }
 
 injectedScript._commandLineAPIImpl = new CommandLineAPIImpl();
 return injectedScript;
 })