Use extensions::ResultCatcher; delete ExtensionApiTest::ResultCatcher.

chrome/browser/extensions/extension_commands_global_registry_apitest.cc

 // Copyright (c) 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/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/window_controller.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/interactive_test_utils.h"
 #include "content/public/test/browser_test_utils.h"
+#include "extensions/test/result_catcher.h"
 #include "ui/base/base_window.h"
 #include "ui/base/test/ui_controls.h"
 
 #if defined(OS_LINUX)
 #include <X11/Xlib.h>
 #include <X11/extensions/XTest.h>
 #include <X11/keysym.h>
 
 #include "ui/events/keycodes/keyboard_code_conversion_x.h"
 #include "ui/gfx/x/x11_types.h"
@@ skipping 174 matching lines @@
                             false,
                             false,
                             false);
 
   // We should get two success results.
   ASSERT_TRUE(catcher.GetNextResult());
   ASSERT_TRUE(catcher.GetNextResult());
 }
 
 }  // namespace extensions