Compile print_preview, part 6: reduce down to 48 errors

chrome/browser/resources/print_preview/data/app_state.js

Index: chrome/browser/resources/print_preview/data/app_state.js
diff --git a/chrome/browser/resources/print_preview/data/app_state.js b/chrome/browser/resources/print_preview/data/app_state.js
index 9f3449a3bc9189c26a822cdb04a140a970a73d0c..430685e59404859fabe83194baa07fcd3534ae56 100644
--- a/chrome/browser/resources/print_preview/data/app_state.js
+++ b/chrome/browser/resources/print_preview/data/app_state.js
@@ -12,7 +12,7 @@ cr.define('print_preview', function() {
   function AppState() {
     /**
      * Internal representation of application state.
-     * @type {Object.<string, print_preview.ValueType>}
+     * @type {Object.<string, ?>}
      * @private
      */
     this.state_ = {};
@@ -114,7 +114,7 @@ cr.define('print_preview', function() {
 
     /**
      * @param {!print_preview.AppState.Field} field App state field to get.
-     * @return {print_preview.ValueType} Value of the app state field.
+     * @return {?} Value of the app state field.
      */
     getField: function(field) {
       if (field == AppState.Field.CUSTOM_MARGINS) {
@@ -135,7 +135,8 @@ cr.define('print_preview', function() {
      */
     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;
         }
@@ -166,7 +167,7 @@ cr.define('print_preview', function() {
     /**
      * Persists the given value for the given field.
      * @param {!print_preview.AppState.Field} field Field to persist.
-     * @param {print_preview.ValueType} value Value of field to persist.
+     * @param {?} value Value of field to persist.
      */
     persistField: function(field, value) {
       if (!this.isInitialized_)