Add the ability to return descedant 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 1234 matching lines @@
 {
     if (!object || !object.addEventListener || !object.removeEventListener)
         return;
     var types = CommandLineAPIImpl._normalizeEventTypes(opt_types);
     for (var i = 0; i < types.length; ++i)
         object.removeEventListener(types[i], CommandLineAPIImpl._logEvent, false);
 }
 
 /**
  * @param {!Node} node
+ * @param {?Object} options
  * @return {!Object|undefined}
  */
-CommandLineAPIImpl.getEventListeners = function(node)
+CommandLineAPIImpl.getEventListeners = function(node, options)
 {
-    var result = nullifyObjectProto(InjectedScriptHost.getEventListeners(node));
+    options = options || {};
+    var showPassive = true;
+    var showBlocking = true;
+    if (typeof options['passive'] != "undefined") {

[caseq, 2016/05/20 00:47:24]

here and below, double quotes please!
Also, use !== instead of !=

[dtapuska, 2016/05/26 20:37:44]

removed after rebase

+        showPassive = options['passive'];
+        showBlocking = !showPassive;
+    }
+
+    var result = nullifyObjectProto(InjectedScriptHost.getEventListeners(node,
+                                                                         options['descendants'],

[caseq, 2016/05/20 00:47:24]

Put all params on either one or two lines, or use indent of 4.

[dtapuska, 2016/05/26 20:37:44]

removed after rebase

+                                                                         showPassive,
+                                                                         showBlocking));
     if (!result)
         return;
 
     // TODO(dtapuska): Remove this one closure compiler is updated
     // to handle EventListenerOptions and passive event listeners
     // has shipped. Don't JSDoc these otherwise it will fail.
     // @param {boolean} capture
     // @param {boolean} passive
     // @return {boolean|undefined|{capture: (boolean|undefined), passive: boolean}}
     function eventListenerOptions(capture, passive)
@@ skipping 60 matching lines @@
 /**
  * @param {!Event} event
  */
 CommandLineAPIImpl._logEvent = function(event)
 {
     inspectedGlobalObject.console.log(event.type, event);
 }
 
 return injectedScript;
 })