[DevTools] Typed events and event listeners.

third_party/WebKit/LayoutTests/http/tests/inspector/persistence/persistence-test.js

 var initialize_PersistenceTest = function() {
 
 InspectorTest.preloadModule("persistence");
 InspectorTest.preloadModule("sources");
 
 Persistence.PersistenceBinding.prototype.toString = function()
 {
     var lines = [
         "{",
         "       network: " + this.network.url(),
         "    fileSystem: " + this.fileSystem.url(),
         "    exactMatch: " + this.exactMatch,
         "}"
     ];
     return lines.join("\n");
 }
 
 InspectorTest.waitForBinding = function(fileName)
 {
     var uiSourceCodes = Workspace.workspace.uiSourceCodes();
     for (var uiSourceCode of uiSourceCodes) {
         var binding = Persistence.persistence.binding(uiSourceCode);
         if (!binding)
             continue;
         if (uiSourceCode.name() === fileName)
             return Promise.resolve(binding);
     }
     var fulfill;
     var promise = new Promise(x => fulfill = x);
-    Persistence.persistence.addEventListener(Persistence.Persistence.Events.BindingCreated, onBindingCreated);
+    Persistence.persistence.addEventListener(Persistence.Persistence.BindingChangedEvent, onBindingChanged);
     return promise;
 
-    function onBindingCreated(event)
+    function onBindingChanged(event)
     {
-        var binding = event.data;
-        if (binding.network.name() !== fileName && binding.fileSystem.name() !== fileName)
+        if (!event.created)
             return;
-        Persistence.persistence.removeEventListener(Persistence.Persistence.Events.BindingCreated, onBindingCreated);
-        fulfill(binding);
+        if (event.binding.network.name() !== fileName && event.binding.fileSystem.name() !== fileName)
+            return;
+        Persistence.persistence.removeEventListener(Persistence.Persistence.BindingChangedEvent, onBindingChanged);
+        fulfill(event.binding);
     }
 }
 
 InspectorTest.waitForUISourceCode = function(name, projectType)
 {
     var uiSourceCodes = Workspace.workspace.uiSourceCodes();
     var uiSourceCode = uiSourceCodes.find(filterCode);
     if (uiSourceCode)
         return Promise.resolve(uiSourceCode);
 
@@ skipping 16 matching lines @@
         return uiSourceCode.name() === name && uiSourceCode.project().type() === projectType;
     }
 }
 
 InspectorTest.addFooJSFile = function(fs)
 {
     return fs.root.mkdir("inspector").mkdir("persistence").mkdir("resources").addFile("foo.js", "\n\nwindow.foo = ()=>'foo';");
 }
 
 }