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

chrome/browser/extensions/stubs_apitest.cc

 // Copyright (c) 2011 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/common/chrome_paths.h"
 #include "chrome/test/base/ui_test_utils.h"
+#include "extensions/test/result_catcher.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "url/gurl.h"
 
 // Tests that we throw errors when you try using extension APIs that aren't
 // supported in content scripts.
 // Timey-outy on mac. http://crbug.com/89116
 #if defined(OS_MACOSX)
 #define MAYBE_Stubs DISABLED_Stubs
 #else
 #define MAYBE_Stubs Stubs
 #endif
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, MAYBE_Stubs) {
   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
 
   ASSERT_TRUE(RunExtensionTest("stubs")) << message_;
 
   // Navigate to a simple http:// page, which should get the content script
   // injected and run the rest of the test.
   GURL url(embedded_test_server()->GetURL("/extensions/test_file.html"));
   ui_test_utils::NavigateToURL(browser(), url);
 
-  ResultCatcher catcher;
+  extensions::ResultCatcher catcher;
   ASSERT_TRUE(catcher.GetNextResult());
 }
 
 // Tests that all API features that are available to a platform app actually
 // can be used in an app. For example, this test will fail if a developer adds
 // an API feature without providing a schema. http://crbug.com/369318
 IN_PROC_BROWSER_TEST_F(ExtensionApiTest, StubsApp) {
   ASSERT_TRUE(RunPlatformAppTestWithFlags(
       "stubs_app", static_cast<int>(kFlagIgnoreManifestWarnings)))
       << message_;
 }