Add symbolic link support to FileSystemFileUtil::AbstractFileEnumerator.

base/file_util_posix.cc

 // 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 "base/file_util.h"
 
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <fnmatch.h>
@@ skipping 756 matching lines @@
   DCHECK(info);
 
   if (current_directory_entry_ >= directory_entries_.size())
     return;
 
   DirectoryEntryInfo* cur_entry = &directory_entries_[current_directory_entry_];
   memcpy(&(info->stat), &(cur_entry->stat), sizeof(info->stat));
   info->filename.assign(cur_entry->filename.value());
 }
 
+// static
 bool FileEnumerator::IsDirectory(const FindInfo& info) {
   return S_ISDIR(info.stat.st_mode);
 }
 
 // static
+bool FileEnumerator::IsLink(const FindInfo& info) {
+  return S_ISLNK(info.stat.st_mode);
+}
+
+// static
 FilePath FileEnumerator::GetFilename(const FindInfo& find_info) {
   return FilePath(find_info.filename);
 }
 
 // static
 int64 FileEnumerator::GetFilesize(const FindInfo& find_info) {
   return find_info.stat.st_size;
 }
 
 // static
@@ skipping 304 matching lines @@
 
     allowed_group_ids.insert(group_record->gr_gid);
   }
 
   return VerifyPathControlledByUser(
       kFileSystemRoot, path, kRootUid, allowed_group_ids);
 }
 #endif  // defined(OS_MACOSX)
 
 }  // namespace file_util