DevTools: Improve CommandLineAPI's getEventListeners result.

Source/core/inspector/InjectedScriptSource.js

Index: Source/core/inspector/InjectedScriptSource.js
diff --git a/Source/core/inspector/InjectedScriptSource.js b/Source/core/inspector/InjectedScriptSource.js
index 5965f4bcf6791fd3dc3c4b0d76f84393a42ebfad..b3f6a6cda76ab68b160a22a81e7c035bbbe2dcfd 100644
--- a/Source/core/inspector/InjectedScriptSource.js
+++ b/Source/core/inspector/InjectedScriptSource.js
@@ -1377,10 +1377,29 @@ CommandLineAPIImpl.prototype = {
 
     /**
      * @param {Node} node
+     * @return {{type: string, listener: function(), useCapture: boolean, remove: function()}}
      */
     getEventListeners: function(node)
     {
-        return InjectedScriptHost.getEventListeners(node);
+        var result = InjectedScriptHost.getEventListeners(node);
+        if (!result)
+            return result;
+        /** @this {{type: string, listener: function(), useCapture: boolean}} */
+        var removeFunc = function()
+        {
+            node.removeEventListener(this.type, this.listener, this.useCapture);
+        }
+        try {
+            for (var type in result) {
+                var listeners = result[type];
+                for (var i = 0, listener; listener = listeners[i]; ++i) {
+                    listener["type"] = type;
+                    listener["remove"] = removeFunc;
+                }
+            }
+        } catch (e) {

[pfeldman, 2013/10/28 09:22:57]

why try / catch?

+        }
+        return result;
     },
 
     debug: function(fn)