Revert of Allow POSIX callers to specify a new file's mode.

base/files/file_util_unittest.cc

Index: base/files/file_util_unittest.cc
diff --git a/base/files/file_util_unittest.cc b/base/files/file_util_unittest.cc
index e61cb89267feb3fe22dfafdc0098db1b82d211b4..08c9587cc0655895e4604cc7e85be88f25215d05 100644
--- a/base/files/file_util_unittest.cc
+++ b/base/files/file_util_unittest.cc
@@ -2143,28 +2143,6 @@
             file_info.last_modified.ToInternalValue());
 }
 
-#if defined(OS_POSIX) && !defined(OS_ANDROID)
-TEST_F(FileUtilTest, WriteFileWithMode) {
-  FilePath data_dir =
-      temp_dir_.path().Append(FILE_PATH_LITERAL("FilePathTest"));
-
-  // Create a fresh, empty copy of this directory.
-  if (PathExists(data_dir)) {
-    ASSERT_TRUE(DeleteFile(data_dir, true));
-  }
-  ASSERT_TRUE(CreateDirectory(data_dir));
-
-  FilePath foobar(data_dir.Append(FILE_PATH_LITERAL("foobar.txt")));
-  std::string data("hello");
-  mode_t mode = 0644;
-  ASSERT_TRUE(WriteFileWithMode(foobar, data.c_str(), data.length(), mode));
-
-  struct stat status;
-  ASSERT_EQ(0, stat(foobar.value().c_str(), &status));
-  ASSERT_EQ(mode, status.st_mode & 0777);
-}
-#endif
-
 TEST_F(FileUtilTest, IsDirectoryEmpty) {
   FilePath empty_dir = temp_dir_.path().Append(FILE_PATH_LITERAL("EmptyDir"));