Unify logic of stack trace generation for extension errors

extensions/renderer/resources/json_schema.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.
 
 // -----------------------------------------------------------------------------
 // NOTE: If you change this file you need to touch
 // extension_renderer_resources.grd to have your change take effect.
 // -----------------------------------------------------------------------------
 
 //==============================================================================
@@ skipping 135 matching lines @@
 };
 
 /**
  * Add types that may be referenced by validated schemas that reference them
  * with "$ref": <typeId>. Each type must be a valid schema and define an
  * "id" property.
  */
 JSONSchemaValidator.prototype.addTypes = function(typeOrTypeList) {
   function addType(validator, type) {
     if (!type.id)
-      throw new Error("Attempt to addType with missing 'id' property");
+      throw new $Error.self("Attempt to addType with missing 'id' property");
     validator.types[type.id] = type;
   }
 
   if (typeOrTypeList instanceof Array) {
     for (var i = 0; i < typeOrTypeList.length; i++) {
       addType(this, typeOrTypeList[i]);
     }
   } else {
     addType(this, typeOrTypeList);
   }
@@ skipping 349 matching lines @@
 };
 
 /**
  * Resets errors to an empty list so you can call 'validate' again.
  */
 JSONSchemaValidator.prototype.resetErrors = function() {
   this.errors = [];
 };
 
 exports.JSONSchemaValidator = JSONSchemaValidator;