Extract ResultCatcher from ExtensionApiTest. Use it in ShellApiTest.

extensions/shell/test/shell_test.cc

 // 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.
 
 #include "extensions/shell/test/shell_test.h"
 
 #include "base/command_line.h"
-#include "base/files/file_path.h"
 #include "base/logging.h"
 #include "content/public/common/content_switches.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/shell/browser/shell_content_browser_client.h"
 #include "extensions/shell/browser/shell_desktop_controller.h"
 #include "extensions/shell/browser/shell_extension_system.h"
 
 namespace extensions {
 
 AppShellTest::AppShellTest() : browser_context_(NULL), extension_system_(NULL) {
@@ skipping 21 matching lines @@
   SetUpOnMainThread();
 
   RunTestOnMainThread();
 
   TearDownOnMainThread();
 
   // Clean up the app window.
   ShellDesktopController::instance()->CloseAppWindows();
 }
 
-bool AppShellTest::LoadAndLaunchApp(const base::FilePath& app_dir) {
-  bool loaded = extension_system_->LoadApp(app_dir);
-  if (loaded)
-    extension_system_->LaunchApp();
-  return loaded;
-}
-
 }  // namespace extensions