[chromedriver] Load the automation extension as a component extension.

chrome/test/chromedriver/chrome_launcher.h

 // 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.
 
 #ifndef CHROME_TEST_CHROMEDRIVER_CHROME_LAUNCHER_H_
 #define CHROME_TEST_CHROMEDRIVER_CHROME_LAUNCHER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 23 matching lines @@
     Log* log,
     DeviceManager* device_manager,
     const Capabilities& capabilities,
     ScopedVector<DevToolsEventListener>& devtools_event_listeners,
     scoped_ptr<Chrome>* chrome);
 
 namespace internal {
 Status ProcessExtensions(const std::vector<std::string>& extensions,
                          const base::FilePath& temp_dir,
                          bool include_automation_extension,
-                         CommandLine* command,
+                         Switches* switches,
                          std::vector<std::string>* bg_pages);
 Status PrepareUserDataDir(
     const base::FilePath& user_data_dir,
     const base::DictionaryValue* custom_prefs,
     const base::DictionaryValue* custom_local_state);
 }  // namespace internal
 
 #endif  // CHROME_TEST_CHROMEDRIVER_CHROME_LAUNCHER_H_