[Chromoting] Move shared webapp JS files from crd/js -> base/js

remoting/webapp/crd/js/signal_strategy.js

-// Copyright 2014 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.
-
-'use strict';
-
-/** @suppress {duplicate} */
-var remoting = remoting || {};
-
-/**
- * Abstract interface for various signaling mechanisms.
- *
- * @interface
- * @extends {base.Disposable}
- */
-remoting.SignalStrategy = function() {};
-
-/**
- * @enum {number} SignalStrategy states. Possible state transitions:
- *    NOT_CONNECTED -> CONNECTING (connect() called).
- *    CONNECTING -> HANDSHAKE (connected successfully).
- *    HANDSHAKE -> CONNECTED (authenticated successfully).
- *    CONNECTING -> FAILED (connection failed).
- *    HANDSHAKE -> FAILED (authentication failed).
- *    CONNECTED -> FAILED (connection was terminated).
- *    * -> CLOSED (dispose() called).
- *
- * Do not re-order these values without updating fallback_signal_strategy.js.
- */
-remoting.SignalStrategy.State = {
-  NOT_CONNECTED: 0,
-  CONNECTING: 1,
-  HANDSHAKE: 2,
-  CONNECTED: 3,
-  FAILED: 4,
-  CLOSED: 5
-};
-
-/**
- * @enum {string} SignalStrategy types. Do not add to these values without
- *     updating the corresponding enum in chromoting_extensions.proto.
- */
-remoting.SignalStrategy.Type = {
-  XMPP: 'xmpp',
-  WCS: 'wcs'
-};
-
-remoting.SignalStrategy.prototype.dispose = function() {};
-
-/**
- * @param {function(remoting.SignalStrategy.State):void} onStateChangedCallback
- *   Callback to call on state change.
- */
-remoting.SignalStrategy.prototype.setStateChangedCallback =
-    function(onStateChangedCallback) {};
-
-/**
- * @param {?function(Element):void} onIncomingStanzaCallback Callback to call on
- *     incoming messages.
- */
-remoting.SignalStrategy.prototype.setIncomingStanzaCallback =
-    function(onIncomingStanzaCallback) {};
-
-/**
- * @param {string} server
- * @param {string} username
- * @param {string} authToken
- */
-remoting.SignalStrategy.prototype.connect =
-    function(server, username, authToken) {
-};
-
-/**
- * Sends a message. Can be called only in CONNECTED state.
- * @param {string} message
- */
-remoting.SignalStrategy.prototype.sendMessage = function(message) {};
-
-/**
- * Send any messages accumulated during connection set-up.
- *
- * @param {remoting.LogToServer} logToServer The LogToServer instance for the
- *     connection.
- */
-remoting.SignalStrategy.prototype.sendConnectionSetupResults =
-    function(logToServer) {
-};
-
-/** @return {remoting.SignalStrategy.State} Current state */
-remoting.SignalStrategy.prototype.getState = function() {};
-
-/** @return {!remoting.Error} Error when in FAILED state. */
-remoting.SignalStrategy.prototype.getError = function() {};
-
-/** @return {string} Current JID when in CONNECTED state. */
-remoting.SignalStrategy.prototype.getJid = function() {};
-
-/** @return {remoting.SignalStrategy.Type} The signal strategy type. */
-remoting.SignalStrategy.prototype.getType = function() {};
-
-/**
- * Creates the appropriate signal strategy for the current environment.
- * @return {remoting.SignalStrategy} New signal strategy object.
- */
-remoting.SignalStrategy.create = function() {
-  // Only use XMPP when TCP API is available and TLS support is enabled. That's
-  // not the case for V1 app (socket API is available only to platform apps)
-  // and for Chrome releases before 38.
-  if (chrome.socket && chrome.socket.secure) {
-    /**
-     * @param {remoting.FallbackSignalStrategy.Progress} progress
-     */
-    var progressCallback = function(progress) {
-      console.log('FallbackSignalStrategy progress: ' + progress);
-    };
-
-    return new remoting.FallbackSignalStrategy(
-        new remoting.DnsBlackholeChecker(new remoting.XmppConnection()),
-        new remoting.WcsAdapter());
-  } else {
-    return new remoting.WcsAdapter();
-  }
-};