Create proper object types when loading host cache.

remoting/webapp/base/js/host_options.js

 // Copyright 2015 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.
 
 /**
  * @fileoverview
  * Class handling saving and restoring of per-host options.
  */
 
 /** @suppress {duplicate} */
@@ skipping 19 matching lines @@
   /** @private {?boolean} */
   this.resizeToClient = null;
   /** @private {?number} */
   this.desktopScale = null;
   /** @private {?remoting.PairingInfo} */
   this.pairingInfo = null;
   /** @private {Object} */
   this.remapKeys = null;
 };
 
-/** @return {boolean} True if the remote desktop should be reduced in size to
+/**
+ * Create a typed HostOptions instance from an untyped Object.
+ *
+ * @param {Object} object
+ * @param {string} hostId
+ * @return {remoting.HostOptions}
+ */
+remoting.HostOptions.fromObject = function(object, hostId) {
+  var result = new remoting.HostOptions(hostId);
+  try {
+    result.shrinkToFit = base.assertBoolean(object.shrinkToFit);
+  } catch (e) {}
+  try {
+    result.resizeToClient = base.assertBoolean(object.resizeToClient);
+  } catch (e) {}
+  try {
+    result.desktopScale = base.assertNumber(object.desktopScale);
+  } catch (e) {}
+  try {
+    pairingInfo = base.assertObject(object.pairingInfo);
+  } catch (e) {}
+  try {
+    remapKeys = base.assertObject(object.remapKeys);
+  } catch (e) {}
+  return result;
+};
+
+  /** @return {boolean} True if the remote desktop should be reduced in size to
  *      fit a smaller client window; false if scroll-bars or bump-scrolling
  *      should be used instead.
  */
 remoting.HostOptions.prototype.getShrinkToFit = function() {
   return (this.shrinkToFit == null) ? true : this.shrinkToFit;
 };
 
 /** @param {boolean} shrinkToFit */
 remoting.HostOptions.prototype.setShrinkToFit = function(shrinkToFit) {
   this.shrinkToFit = shrinkToFit;
@@ skipping 163 matching lines @@
     }
     result[fromKey] = toKey;
   }
   return result;
 };
 
 /** @type {string} @private */
 remoting.HostOptions.KEY_ = 'remoting-host-options';
 
 })();