bsd: refactor XDG bits of linux_util into a shared file.

base/base_paths_posix.cc

 // Copyright (c) 2010 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.
 
 // This is really Posix minus Mac. Mac code is in base_paths_mac.mm.
 
 #include "base/base_paths.h"
 
 #include <unistd.h>
 
 #include "base/env_var.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
-#include "base/linux_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/scoped_ptr.h"
 #include "base/sys_string_conversions.h"
+#include "base/xdg_util.h"
 
 namespace base {
 
 #if defined(OS_LINUX)
 const char kSelfExe[] = "/proc/self/exe";
 #elif defined(OS_SOLARIS)
 const char kSelfExe[] = getexecname();
 #elif defined(OS_FREEBSD)
 const char kSelfExe[] = "/proc/curproc/file";
 #endif
@@ skipping 52 matching lines @@
       scoped_ptr<base::EnvVarGetter> env(base::EnvVarGetter::Create());
       FilePath cache_dir(base::GetXDGDirectory(env.get(), "XDG_CACHE_HOME",
                                                ".cache"));
       *result = cache_dir;
       return true;
   }
   return false;
 }
 
 }  // namespace base