Add support for GetHomeDir for Mac and Windows.

base/file_util_unittest.cc

 // 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.
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #include <shlobj.h>
@@ skipping 1673 matching lines @@
   EXPECT_TRUE(temp_dir_.path().IsParent(new_dir));
   EXPECT_TRUE(DeleteFile(new_dir, false));
 }
 
 TEST_F(FileUtilTest, GetShmemTempDirTest) {
   FilePath dir;
   EXPECT_TRUE(GetShmemTempDir(false, &dir));
   EXPECT_TRUE(DirectoryExists(dir));
 }
 
+TEST_F(FileUtilTest, GetHomeDirTest) {
+#if !defined(OS_ANDROID)  // Not implemented on Android.
+  // We don't actually know what the home directory is supposed to be without
+  // calling some OS functions which would just duplicate the implementation.
+  // So here we just test that it returns something "reasonable".
+  FilePath home = GetHomeDir();
+  ASSERT_FALSE(home.empty());
+  ASSERT_TRUE(home.IsAbsolute());
+#endif
+}
+
 TEST_F(FileUtilTest, CreateDirectoryTest) {
   FilePath test_root =
       temp_dir_.path().Append(FILE_PATH_LITERAL("create_directory_test"));
 #if defined(OS_WIN)
   FilePath test_path =
       test_root.Append(FILE_PATH_LITERAL("dir\\tree\\likely\\doesnt\\exist\\"));
 #elif defined(OS_POSIX)
   FilePath test_path =
       test_root.Append(FILE_PATH_LITERAL("dir/tree/likely/doesnt/exist/"));
 #endif
@@ skipping 744 matching lines @@
   int fd = OpenContentUriForRead(path);
   EXPECT_EQ(-1, fd);
 }
 #endif
 
 #endif  // defined(OS_POSIX)
 
 }  // namespace
 
 }  // namespace base