DevTools: kill WI.IsolatedFileSystemManager FileSystemsLoaded event

third_party/WebKit/Source/devtools/front_end/bindings/FileSystemWorkspaceBinding.js

Index: third_party/WebKit/Source/devtools/front_end/bindings/FileSystemWorkspaceBinding.js
diff --git a/third_party/WebKit/Source/devtools/front_end/bindings/FileSystemWorkspaceBinding.js b/third_party/WebKit/Source/devtools/front_end/bindings/FileSystemWorkspaceBinding.js
index 352a45300b7f4fdc57623a4ab629a738959f6f0b..6ff92a378dc27ca3680d93725434b60c6ddfbc9c 100644
--- a/third_party/WebKit/Source/devtools/front_end/bindings/FileSystemWorkspaceBinding.js
+++ b/third_party/WebKit/Source/devtools/front_end/bindings/FileSystemWorkspaceBinding.js
@@ -38,12 +38,14 @@ WebInspector.FileSystemWorkspaceBinding = function(isolatedFileSystemManager, wo
     this._isolatedFileSystemManager = isolatedFileSystemManager;
     this._workspace = workspace;
     this._eventListeners = [
-        this._isolatedFileSystemManager.addEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemAdded, this._fileSystemAdded, this),
-        this._isolatedFileSystemManager.addEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemRemoved, this._fileSystemRemoved, this),
+        this._isolatedFileSystemManager.addEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemAdded, this._onFileSystemAdded, this),
+        this._isolatedFileSystemManager.addEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemRemoved, this._onFileSystemRemoved, this),
         this._isolatedFileSystemManager.addEventListener(WebInspector.IsolatedFileSystemManager.Events.FileSystemFilesChanged, this._fileSystemFilesChanged, this)
     ];
     /** @type {!Map.<string, !WebInspector.FileSystemWorkspaceBinding.FileSystem>} */
     this._boundFileSystems = new Map();
+    this._isolatedFileSystemManager.waitForFileSystems()
+        .then(this._onFileSystemsLoaded.bind(this));
 }
 
 WebInspector.FileSystemWorkspaceBinding._styleSheetExtensions = new Set(["css", "scss", "sass", "less"]);
@@ -109,11 +111,28 @@ WebInspector.FileSystemWorkspaceBinding.prototype = {
     },
 
     /**
+     * @param {!Array<!WebInspector.IsolatedFileSystem>} fileSystems
+     */
+    _onFileSystemsLoaded: function(fileSystems)
+    {
+        for (var fileSystem of fileSystems)
+            this._addFileSystem(fileSystem);
+    },
+
+    /**
      * @param {!WebInspector.Event} event
      */
-    _fileSystemAdded: function(event)
+    _onFileSystemAdded: function(event)
     {
         var fileSystem = /** @type {!WebInspector.IsolatedFileSystem} */ (event.data);
+        this._addFileSystem(fileSystem);
+    },
+
+    /**
+     * @param {!WebInspector.IsolatedFileSystem} fileSystem
+     */
+    _addFileSystem: function(fileSystem)
+    {
         var boundFileSystem = new WebInspector.FileSystemWorkspaceBinding.FileSystem(this, fileSystem, this._workspace);
         this._boundFileSystems.set(fileSystem.path(), boundFileSystem);
     },
@@ -121,7 +140,7 @@ WebInspector.FileSystemWorkspaceBinding.prototype = {
     /**
      * @param {!WebInspector.Event} event
      */
-    _fileSystemRemoved: function(event)
+    _onFileSystemRemoved: function(event)
     {
         var fileSystem = /** @type {!WebInspector.IsolatedFileSystem} */ (event.data);
         var boundFileSystem = this._boundFileSystems.get(fileSystem.path());