Move all callers of GetHomeDir() to PathService::Get(base::DIR_HOME).

base/file_util.h

 // Copyright (c) 2012 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 file contains utility functions for dealing with the local
 // filesystem.
 
 #ifndef BASE_FILE_UTIL_H_
 #define BASE_FILE_UTIL_H_
 
@@ skipping 209 matching lines @@
 // Only useful on POSIX; redirects to GetTempDir() on Windows.
 BASE_EXPORT bool GetShmemTempDir(bool executable, FilePath* path);
 
 // Get the home directory. This is more complicated than just getenv("HOME")
 // as it knows to fall back on getpwent() etc.
 //
 // You should not generally call this directly. Instead use DIR_HOME with the
 // path service which will use this function but cache the value.
 BASE_EXPORT FilePath GetHomeDir();
 
+#if defined(OS_CHROMEOS)
+// Called when user is logged in on ChromeOS.
+BASE_EXPORT void SetUserLoggedIn(bool logged_in);
+
+// Called when primary logged in user id hash is available in on ChromeOS.
+BASE_EXPORT void SetPrimaryUserIdHash(std::string user_id_hash);

[Dmitry Polukhin, 2014/03/14 16:35:25]

I think we can use empty user_id_hash as sign that there is no logged in user.
IMHO, SetUserLoggedIn doesn't add much value. But I would ask base OWNERS.

[Nikita (slow), 2014/03/14 16:39:52]

Done.

+#endif
+
 // Creates a temporary file. The full path is placed in |path|, and the
 // function returns true if was successful in creating the file. The file will
 // be empty and all handles closed after this function returns.
 BASE_EXPORT bool CreateTemporaryFile(FilePath* path);
 
 // Same as CreateTemporaryFile but the file is created in |dir|.
 BASE_EXPORT bool CreateTemporaryFileInDir(const FilePath& dir,
                                           FilePath* temp_file);
 
 // Create and open a temporary file.  File is opened for read/write.
@@ skipping 235 matching lines @@
 // This function simulates Move(), but unlike Move() it works across volumes.
 // This function is not transactional.
 BASE_EXPORT bool CopyAndDeleteDirectory(const FilePath& from_path,
                                         const FilePath& to_path);
 #endif  // defined(OS_WIN)
 
 }  // namespace internal
 }  // namespace base
 
 #endif  // BASE_FILE_UTIL_H_