Compile print_preview, part 6: reduce down to 48 errors

chrome/browser/resources/print_preview/data/app_state.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.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * Object used to get and persist the print preview application state.
    * @constructor
@@ skipping 117 matching lines @@
     /**
      * Initializes the app state from a serialized string returned by the native
      * layer.
      * @param {?string} serializedAppStateStr Serialized string representation
      *     of the app state.
      * @param {?string} systemDefaultDestinationId ID of the system default
      *     destination.
      */
     init: function(serializedAppStateStr, systemDefaultDestinationId) {
       if (serializedAppStateStr) {
-        var state = JSON.parse(serializedAppStateStr);
+        var state = /** @type {Object.<string, ?>} */(
+            JSON.parse(serializedAppStateStr));
         if (state[AppState.Field.VERSION] == AppState.VERSION_) {
           this.state_ = state;
         }
       } else {
         // Set some state defaults.
         this.state_[AppState.Field.IS_GCP_PROMO_DISMISSED] = false;
       }
       // Default to system destination, if no destination was selected.
       if (!this.state_[AppState.Field.SELECTED_DESTINATION_ID] ||
           !this.state_[AppState.Field.SELECTED_DESTINATION_ORIGIN]) {
@@ skipping 65 matching lines @@
     persist_: function() {
       chrome.send(AppState.NATIVE_FUNCTION_NAME_,
                   [JSON.stringify(this.state_)]);
     }
   };
 
   return {
     AppState: AppState
   };
 });