override chrome:// URLs via extensions.

chrome/browser/extensions/extension_apitest.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_APITEST_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_APITEST_H_
 
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/common/notification_service.h"
 
@@ skipping 15 matching lines @@
   // Reset |completed_| and wait for a new pass / fail notification.
   bool WaitForPassFail();
 
   // All extensions tested by ExtensionApiTest are in the "api_test" dir.
   virtual void SetUpCommandLine(CommandLine* command_line);
 
   // NotificationObserver
   void Observe(NotificationType type, const NotificationSource& source,
                const NotificationDetails& details);
 
-  // Did the extension side of the unit test complete?
-  bool completed_;
-
-  // Did the extension side of the unit test pass?
-  bool passed_;
+  // A sequential list of pass/fail notifications from the test extension(s).
+  std::deque<bool> results_;
 
   // If it failed, what was the error message?
+  std::deque<std::string> messages_;
   std::string message_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_APITEST_H_