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 60d9584600b81cb9fe3c31b72f20c73ec040c92f..a8ed9992dbe8fa9f79a33ead478c972c808187f7 100644
--- a/third_party/WebKit/Source/platform/v8_inspector/InjectedScriptSource.js
+++ b/third_party/WebKit/Source/platform/v8_inspector/InjectedScriptSource.js
@@ -1252,11 +1252,23 @@ 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));
+    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;