Correctly handle extension reloading in the task manager....

chrome/browser/extensions/extension_browsertest.cc

 // Copyright (c) 2009 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/extensions/extension_browsertest.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/file_path.h"
@@ skipping 97 matching lines @@
          iter != errors->end(); ++iter) {
       std::cout << *iter << "\n";
     }
 
     return false;
   }
 
   return WaitForExtensionHostsToLoad();
 }
 
+void ExtensionBrowserTest::ReloadExtension(const std::string& extension_id) {
+  NotificationRegistrar registrar;
+  registrar.Add(this, NotificationType::EXTENSION_LOADED,
+                NotificationService::AllSources());
+
+  ExtensionsService* service = browser()->profile()->GetExtensionsService();
+  service->ReloadExtension(extension_id);
+  MessageLoop::current()->PostDelayedTask(
+      FROM_HERE, new MessageLoop::QuitTask, kTimeoutMs);
+  ui_test_utils::RunMessageLoop();
+}
+
 void ExtensionBrowserTest::UnloadExtension(const std::string& extension_id) {
   ExtensionsService* service = browser()->profile()->GetExtensionsService();
   service->UnloadExtension(extension_id);
 }
 
 void ExtensionBrowserTest::UninstallExtension(const std::string& extension_id) {
   ExtensionsService* service = browser()->profile()->GetExtensionsService();
   service->UninstallExtension(extension_id, false);
 }
 
@@ skipping 109 matching lines @@
     case NotificationType::EXTENSION_INSTALL_ERROR:
       std::cout << "Got EXTENSION_INSTALL_ERROR notification.\n";
       MessageLoopForUI::current()->Quit();
       break;
 
     default:
       NOTREACHED();
       break;
   }
 }