Introduce a stable set of errors for inline install

chrome/renderer/resources/extensions/webstore_custom_bindings.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.
 
 // Custom binding for the webstore API.
 
 var webstoreNatives = requireNative('webstore');
 var Event = require('event_bindings').Event;
 
 function Installer() {
@@ skipping 28 matching lines @@
       onFailure);
   if (installId !== undefined) {
     this._pendingInstall = {
       installId: installId,
       onSuccess: onSuccess,
       onFailure: onFailure
     };
   }
 };
 
-Installer.prototype.onInstallResponse = function(installId, success, error) {
+Installer.prototype.onInstallResponse =
+    function(installId, success, error, resultCode) {
   var pendingInstall = this._pendingInstall;
   if (!pendingInstall || pendingInstall.installId != installId) {
     // TODO(kalman): should this be an error?
     return;
   }
 
   try {
     if (success && pendingInstall.onSuccess)
       pendingInstall.onSuccess();
     else if (!success && pendingInstall.onFailure)
-      pendingInstall.onFailure(error);
+      pendingInstall.onFailure(error, resultCode);
   } catch (e) {
     console.error('Exception in chrome.webstore.install response handler: ' +
                   e.stack);
   } finally {
     this._pendingInstall = null;
   }
 };
 
 Installer.prototype.onInstallStageChanged = function(installStage) {
   this.onInstallStageChanged.dispatch(installStage);
@@ skipping 15 matching lines @@
 
 exports.binding = chromeWebstore;
 
 // Called by webstore_bindings.cc.
 exports.onInstallResponse =
     Installer.prototype.onInstallResponse.bind(installer);
 exports.onInstallStageChanged =
     Installer.prototype.onInstallStageChanged.bind(installer);
 exports.onDownloadProgress =
     Installer.prototype.onDownloadProgress.bind(installer);