Fix rebaseline bug when new files are under untracked directories

third_party/WebKit/Tools/Scripts/webkitpy/common/checkout/git.py

 # Copyright (c) 2009, 2010, 2011 Google Inc. All rights reserved.
 # Copyright (c) 2009 Apple Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 145 matching lines @@
 
     def unstaged_changes(self):
         """Lists files with unstaged changes, including untracked files.
 
         Returns a dict mapping modified file paths (relative to checkout root)
         to one-character codes identifying the change, e.g. 'M' for modified,
         'D' for deleted, '?' for untracked.
         """
         # `git status -z` is a version of `git status -s`, that's recommended
         # for machine parsing. Lines are terminated with NUL rather than LF.
-        change_lines = self._run_git(['status', '-z']).rstrip('\x00')
+        change_lines = self._run_git(['status', '-z', '--untracked-files=all']).rstrip('\x00')
         if not change_lines:
             return {}  # No changes.
         unstaged_changes = {}
         for line in change_lines.split('\x00'):
             assert len(line) >= 4, 'Unexpected change line format %s' % line
             if line[1] == ' ':
                 continue  # Already staged for commit.
             path = line[3:]
             unstaged_changes[path] = line[1]
         return unstaged_changes
@@ skipping 235 matching lines @@
         if self.current_branch() != self._branch_tracking_remote_master():
             return False
         if len(self._local_commits(self._branch_tracking_remote_master())) > 0:
             return False
         return True
 
     def ensure_cleanly_tracking_remote_master(self):
         self._discard_working_directory_changes()
         self._run_git(['checkout', '-q', self._branch_tracking_remote_master()])
         self._discard_local_commits()