[Sync] Move //components/sync_driver to //components/sync/driver.

components/sync_driver/resources/chrome_sync.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.
-
-// require cr.js
-// require cr/event_target.js
-// require cr/util.js
-
-cr.define('chrome.sync', function() {
-  'use strict';
-
-  /**
-   * A simple timer to measure elapsed time.
-   * @constructor
-   */
-  function Timer() {
-    /**
-     * The time that this Timer was created.
-     * @type {number}
-     * @private
-     * @const
-     */
-    this.start_ = Date.now();
-  }
-
-  /**
-   * @return {number} The elapsed seconds since this Timer was created.
-   */
-  Timer.prototype.getElapsedSeconds = function() {
-    return (Date.now() - this.start_) / 1000;
-  };
-
-  /** @return {!Timer} An object which measures elapsed time. */
-  var makeTimer = function() {
-    return new Timer;
-  };
-
-  /**
-   * @param {string} name The name of the event type.
-   * @param {!Object} details A collection of event-specific details.
-   */
-  var dispatchEvent = function(name, details) {
-    var e = new Event(name);
-    e.details = details;
-    chrome.sync.events.dispatchEvent(e);
-  };
-
-  /**
-   * Registers to receive a stream of events through
-   * chrome.sync.dispatchEvent().
-   */
-  var registerForEvents = function() {
-    chrome.send('registerForEvents');
-  };
-
-  /**
-   * Registers to receive a stream of status counter update events
-   * chrome.sync.dispatchEvent().
-   */
-  var registerForPerTypeCounters = function() {
-    chrome.send('registerForPerTypeCounters');
-  }
-
-  /**
-   * Asks the browser to refresh our snapshot of sync state.  Should result
-   * in an onAboutInfoUpdated event being emitted.
-   */
-  var requestUpdatedAboutInfo = function() {
-    chrome.send('requestUpdatedAboutInfo');
-  };
-
-  /**
-   * Asks the browser to send us the list of registered types.  Should result
-   * in an onReceivedListOfTypes event being emitted.
-   */
-  var requestListOfTypes = function() {
-    chrome.send('requestListOfTypes');
-  };
-
-  /**
-   * Counter to uniquely identify requests while they're in progress.
-   * Used in the implementation of GetAllNodes.
-   */
-  var requestId = 0;
-
-  /**
-   * A map from counter values to asynchronous request callbacks.
-   * Used in the implementation of GetAllNodes.
-   * @type {{number: !Function}}
-   */
-  var requestCallbacks = {};
-
-  /**
-   * Asks the browser to send us a copy of all existing sync nodes.
-   * Will eventually invoke the given callback with the results.
-   *
-   * @param {function(!Object)} callback The function to call with the response.
-   */
-  var getAllNodes = function(callback) {
-    requestId++;
-    requestCallbacks[requestId] = callback;
-    chrome.send('getAllNodes', [requestId]);
-  };
-
-  /**
-   * Called from C++ with the response to a getAllNodes request.
-   * @param {number} id The requestId passed in with the request.
-   * @param {Object} response The response to the request.
-   */
-  var getAllNodesCallback = function(id, response) {
-    requestCallbacks[id](response);
-    requestCallbacks[id] = undefined;
-  };
-
-  return {
-    makeTimer: makeTimer,
-    dispatchEvent: dispatchEvent,
-    events: new cr.EventTarget(),
-    getAllNodes: getAllNodes,
-    getAllNodesCallback: getAllNodesCallback,
-    registerForEvents: registerForEvents,
-    registerForPerTypeCounters: registerForPerTypeCounters,
-    requestUpdatedAboutInfo: requestUpdatedAboutInfo,
-    requestListOfTypes: requestListOfTypes,
-  };
-});