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

chrome/browser/process_singleton_modal_dialog_lock.cc

 // 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.
 
 #include "chrome/browser/process_singleton_modal_dialog_lock.h"
 
 #if defined(OS_WIN)
 #include <Windows.h>
 #endif
 
@@ skipping 36 matching lines @@
   active_dialog_ = active_dialog;
 }
 
 ProcessSingleton::NotificationCallback
 ProcessSingletonModalDialogLock::AsNotificationCallback() {
   return base::Bind(&ProcessSingletonModalDialogLock::NotificationCallbackImpl,
                     base::Unretained(this));
 }
 
 bool ProcessSingletonModalDialogLock::NotificationCallbackImpl(
-      const CommandLine& command_line,
-      const base::FilePath& current_directory) {
+    const base::CommandLine& command_line,
+    const base::FilePath& current_directory) {
   if (active_dialog_ != NULL) {
     set_foreground_window_handler_.Run(active_dialog_);
     return true;
   } else {
     return original_callback_.Run(command_line, current_directory);
   }
 }