Introduce a stable set of errors for inline install

chrome/browser/chromeos/file_manager/app_installer.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/chromeos/file_manager/app_installer.h"
 
+#include "chrome/common/extensions/webstore_install_result.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 
 namespace file_manager {
 
 namespace {
 const char kWebContentsDestroyedError[] = "WebContents is destroyed.";
 }  // namespace
 
 class AppInstaller::WebContentsObserver : public content::WebContentsObserver {
@@ skipping 72 matching lines @@
 bool AppInstaller::CheckRequestorPermitted(
     const base::DictionaryValue& webstore_data,
     std::string* error) const {
   DCHECK(error != NULL);
   DCHECK(error->empty());
   return true;
 }
 
 void AppInstaller::OnWebContentsDestroyed(
     content::WebContents* web_contents) {
-  callback_.Run(false, kWebContentsDestroyedError);
+  callback_.Run(false,
+                kWebContentsDestroyedError,
+                extensions::webstore_install::OTHER_ERROR);
   AbortInstall();
 }
 
 }  // namespace file_manager