Add the ability to return descedant event listeners.

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

Index: third_party/WebKit/Source/platform/v8_inspector/InjectedScriptSource.js
diff --git a/third_party/WebKit/Source/platform/v8_inspector/InjectedScriptSource.js b/third_party/WebKit/Source/platform/v8_inspector/InjectedScriptSource.js
index eb8115f9024830252f5a55e8b3822cce5c7d09d3..6b6f6d4618fddf173edf16393663342e9bc832ce 100644
--- a/third_party/WebKit/Source/platform/v8_inspector/InjectedScriptSource.js
+++ b/third_party/WebKit/Source/platform/v8_inspector/InjectedScriptSource.js
@@ -1222,11 +1222,23 @@ CommandLineAPIImpl.unmonitorEvents = function(object, opt_types)
 
 /**
  * @param {!Node} node
+ * @param {?Object} options
  * @return {!Object|undefined}
  */
-CommandLineAPIImpl.getEventListeners = function(node)
+CommandLineAPIImpl.getEventListeners = function(node, options)
 {
-    var result = nullifyObjectProto(InjectedScriptHost.getEventListeners(node));
+    if (!options) options = {};

[caseq, 2016/05/09 21:08:39]

style: move options to the next line, or just options = options || {}

[dtapuska, 2016/05/18 14:04:53]

Done.

+    var showPassive = true;
+    var showBlocking = true;
+    if (typeof options['passive'] != "undefined") {
+        showPassive = options['passive'];
+        showBlocking = !showPassive;
+    }
+
+    var result = nullifyObjectProto(InjectedScriptHost.getEventListeners(node,
+                                                                         options['descendants'],
+                                                                         showPassive,
+                                                                         showBlocking));
     if (!result)
         return;