[chromedriver] Remove Logger and just use base LOG.

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>
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "chrome/test/chromedriver/capabilities.h"
 #include "chrome/test/chromedriver/net/sync_websocket_factory.h"
 
 class CommandLine;
 class DevToolsEventListener;
 
 namespace base {
 class DictionaryValue;
 class FilePath;
 }
 
 class Chrome;
 class DeviceManager;
-class Log;
 class Status;
 class URLRequestContextGetter;
 
 Status LaunchChrome(
     URLRequestContextGetter* context_getter,
     const SyncWebSocketFactory& socket_factory,
-    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,
                          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_