Perform install tasks for newly installed or upgraded component apps/extensions.

chrome/browser/ui/views/select_file_dialog_extension_browsertest.cc

 // 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.
 
 #include "chrome/browser/ui/views/select_file_dialog_extension.h"
 
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/path_service.h"
 #include "base/threading/platform_thread.h"
 #include "base/utf_string_conversions.h"  // ASCIIToUTF16
 #include "build/build_config.h"
+#include "chrome/browser/extensions/component_loader.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_navigator.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/common/chrome_paths.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
@@ skipping 52 matching lines @@
 };
 
 class SelectFileDialogExtensionBrowserTest : public ExtensionBrowserTest {
  public:
   enum DialogButtonType {
     DIALOG_BTN_OK,
     DIALOG_BTN_CANCEL
   };
 
   virtual void SetUp() OVERRIDE {
+    extensions::ComponentLoader::EnableBackgroundExtensionsForTesting();
+
     // Create the dialog wrapper object, but don't show it yet.
     listener_.reset(new MockSelectFileDialogListener());
     dialog_ = new SelectFileDialogExtension(listener_.get(), NULL);
 
     // We have to provide at least one mount point.
     // File manager looks for "Downloads" mount point, so use this name.
     FilePath tmp_path;
     PathService::Get(base::DIR_TEMP, &tmp_path);
     ASSERT_TRUE(tmp_dir_.CreateUniqueTempDirUnderPath(tmp_path));
     downloads_dir_ = tmp_dir_.path().Append("Downloads");
@@ skipping 246 matching lines @@
   ASSERT_FALSE(second_dialog_->IsRunning(owning_window));
 
   // Click cancel button.
   CloseDialog(DIALOG_BTN_CANCEL, owning_window);
 
   // Listener should have been informed of the cancellation.
   ASSERT_FALSE(listener_->file_selected());
   ASSERT_TRUE(listener_->canceled());
   ASSERT_EQ(this, listener_->params());
 }