[DevTools] Typed events and event listeners.

third_party/WebKit/Source/devtools/front_end/sources/WorkspaceMappingTip.js

Index: third_party/WebKit/Source/devtools/front_end/sources/WorkspaceMappingTip.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sources/WorkspaceMappingTip.js b/third_party/WebKit/Source/devtools/front_end/sources/WorkspaceMappingTip.js
index 83aedaf01493e018117006ad674e00219e13a06d..863e174151dd2db6923a59f7909a3cd96261707e 100644
--- a/third_party/WebKit/Source/devtools/front_end/sources/WorkspaceMappingTip.js
+++ b/third_party/WebKit/Source/devtools/front_end/sources/WorkspaceMappingTip.js
@@ -21,18 +21,19 @@ Sources.WorkspaceMappingTip = class {
     if (this._workspaceInfobarDisabledSetting.get() && this._workspaceMappingInfobarDisabledSetting.get())
       return;
     this._sourcesView.addEventListener(Sources.SourcesView.Events.EditorSelected, this._editorSelected.bind(this));
-    Persistence.persistence.addEventListener(Persistence.Persistence.Events.BindingCreated, this._bindingCreated, this);
+    Persistence.persistence.addEventListener(Persistence.Persistence.BindingChangedEvent, this._bindingChanged, this);
   }
 
   /**
-   * @param {!Common.Event} event
+   * @param {!Persistence.Persistence.BindingChangedEvent} event
    */
-  _bindingCreated(event) {
-    var binding = /** @type {!Persistence.PersistenceBinding} */ (event.data);
-    if (binding.network[Sources.WorkspaceMappingTip._infobarSymbol])
-      binding.network[Sources.WorkspaceMappingTip._infobarSymbol].dispose();
-    if (binding.fileSystem[Sources.WorkspaceMappingTip._infobarSymbol])
-      binding.fileSystem[Sources.WorkspaceMappingTip._infobarSymbol].dispose();
+  _bindingChanged(event) {
+    if (!event.created)
+      return;
+    if (event.binding.network[Sources.WorkspaceMappingTip._infobarSymbol])
+      event.binding.network[Sources.WorkspaceMappingTip._infobarSymbol].dispose();
+    if (event.binding.fileSystem[Sources.WorkspaceMappingTip._infobarSymbol])
+      event.binding.fileSystem[Sources.WorkspaceMappingTip._infobarSymbol].dispose();
   }
 
   /**