Make callers of CommandLine use it via the base:: namespace.

chrome/browser/chromeos/system_logs/debug_log_writer.cc

 // Copyright 2014 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/chromeos/system_logs/debug_log_writer.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/command_line.h"
@@ skipping 172 matching lines @@
   if (!succeeded) {
     if (!callback.is_null())
       callback.Run(base::FilePath(), false);
 
     return;
   }
 
   base::FilePath compressed_output_path =
       tar_file_path.AddExtension(FILE_PATH_LITERAL(".gz"));
   base::FilePath user_log_dir =
-      logging::GetSessionLogDir(*CommandLine::ForCurrentProcess());
+      logging::GetSessionLogDir(*base::CommandLine::ForCurrentProcess());
 
   content::BrowserThread::PostBlockingPoolTask(
       FROM_HERE,
       base::Bind(&AddUserLogsToArchive,
                  user_log_dir,
                  tar_file_path,
                  compressed_output_path,
                  callback));
 }
 
@@ skipping 62 matching lines @@
       fileshelf.Append(FILE_PATH_LITERAL("combined-logs.tar"));
 
   // Get system logs from /var/log first, then add user-specific stuff.
   StartLogRetrieval(file_path,
                     false,
                     sequence_token_name,
                     base::Bind(&OnSystemLogsAdded, callback));
 }
 
 }  // namespace chromeos