Add type annotations to metadata_dispatcher.js.

ui/file_manager/file_manager/common/js/util.js

 // Copyright (c) 2012 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.
 
 /**
  * Namespace for utility functions.
  */
 var util = {};
 
 /**
@@ skipping 182 matching lines @@
 
   for (i = 2 /* MB */; i < UNITS.length - 1; i++) {
     if (bytes < STEPS[i + 1])
       return fmt(STEPS[i], UNITS[i]);
   }
 
   return fmt(STEPS[i], UNITS[i]);
 };
 
 /**
- * Utility function to read specified range of bytes from file
- * @param {File} file The file to read.
- * @param {number} begin Starting byte(included).
- * @param {number} end Last byte(excluded).
- * @param {function(File, ByteReader)} callback Callback to invoke.
- * @param {function(string)} onError Error handler.
- */
-util.readFileBytes = function(file, begin, end, callback, onError) {
-  var fileReader = new FileReader();
-  fileReader.onerror = function(event) {
-    onError(event.type);
-  };
-  fileReader.onloadend = function() {
-    callback(file, new ByteReader(
-        /** @type {ArrayBuffer} */ (fileReader.result)));
-  };
-  fileReader.readAsArrayBuffer(file.slice(begin, end));
-};
-
-/**
  * Returns a string '[Ctrl-][Alt-][Shift-][Meta-]' depending on the event
  * modifiers. Convenient for writing out conditions in keyboard handlers.
  *
  * @param {Event} event The keyboard event.
  * @return {string} Modifiers.
  */
 util.getKeyModifiers = function(event) {
   return (event.ctrlKey ? 'Ctrl-' : '') +
          (event.altKey ? 'Alt-' : '') +
          (event.shiftKey ? 'Shift-' : '') +
@@ skipping 781 matching lines @@
  * @param {!cr.EventTarget} target
  * @param {string} type
  * @param {Function} handler
  */
 util.addEventListenerToBackgroundComponent = function(target, type, handler) {
   target.addEventListener(type, handler);
   window.addEventListener('pagehide', function() {
     target.removeEventListener(type, handler);
   });
 };