CrOS - Fix flaky FileManagerDialogTest

chrome/browser/resources/file_manager/js/metadata_dispatcher.js

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Webworker spec says that the worker global object is called self.  That's
 // a terrible name since we use it all over the chrome codebase to capture
 // the 'this' keyword in lambdas.
 var global = self;
 
 // All of these scripts could be imported with a single call to importScripts,
@@ skipping 33 matching lines @@
 
 /**
  * Verbose logging for the dispatcher.
  *
  * Individual parsers also take this as their default verbosity setting.
  */
 MetadataDispatcher.prototype.verbose = false;
 
 MetadataDispatcher.prototype.messageHandlers = {
   init: function() {
-    this.postMessage('filter', [this.parserRegexp_]);
+    // Inform our owner that we're done initializing.
+    // If we need to pass more data back, we can add it to the param array.
+    this.postMessage('initialized', [this.parserRegexp_]);
     this.log('initialized with URL filter ' + this.parserRegexp_);
   },
 
   request: function(fileURL) {
     var self = this;
 
     try {
       this.processOneFile(fileURL, function callback(metadata) {
           self.postMessage('result', [fileURL, metadata]);
       });
@@ skipping 91 matching lines @@
     function parseContent(file, parser) {
       parser.parse(file, callback, onError);
     }
   ];
 
   nextStep();
 };
 
 var dispatcher = new MetadataDispatcher();
 global.onmessage = dispatcher.onMessage.bind(dispatcher);