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

chrome/browser/diagnostics/diagnostics_model.cc

 // Copyright (c) 2011 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/diagnostics/diagnostics_model.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 210 matching lines @@
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DiagnosticsModelPosix);
 };
 
 #endif
 
 }  // namespace
 
-DiagnosticsModel* MakeDiagnosticsModel(const CommandLine& cmdline) {
+DiagnosticsModel* MakeDiagnosticsModel(const base::CommandLine& cmdline) {
   base::FilePath user_data_dir =
       cmdline.GetSwitchValuePath(switches::kUserDataDir);
   if (!user_data_dir.empty())
     PathService::Override(chrome::DIR_USER_DATA, user_data_dir);
 #if defined(OS_WIN)
   return new DiagnosticsModelWin();
 #elif defined(OS_MACOSX)
   return new DiagnosticsModelMac();
 #elif defined(OS_POSIX)
   return new DiagnosticsModelPosix();
 #endif
 }
 
 }  // namespace diagnostics