Get rid of unnecessary chrome_main_ files now that most of the code has been removed from them. I...

chrome/app/chrome_main_posix.cc

Index: chrome/app/chrome_main_posix.cc
===================================================================
--- chrome/app/chrome_main_posix.cc	(revision 99456)
+++ chrome/app/chrome_main_posix.cc	(working copy)
@@ -1,16 +0,0 @@
-// 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/app/chrome_main.h"
-
-namespace chrome_main {
-
-#if !defined(OS_MACOSX)
-// This policy is not implemented for Linux and ChromeOS. The win and mac ver-
-// sions are implemented in the platform specific version of chrome_main.cc e.g.
-// chrome_main_win.cc or chrome_main_mac.mm .
-void CheckUserDataDirPolicy(FilePath* user_data_dir) {}
-#endif
-
-}  // namespace chrome_main