Modify devtools to show passive 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 ee26d3735b37fbe723500f1b0bbccf12585fa259..d460b5a5c69e1332d4ff60fb41c04623e252079e 100644
--- a/third_party/WebKit/Source/platform/v8_inspector/InjectedScriptSource.js
+++ b/third_party/WebKit/Source/platform/v8_inspector/InjectedScriptSource.js
@@ -1393,10 +1393,17 @@ CommandLineAPIImpl.prototype = {
         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];