Move scoped_temp_dir and scoped_native_library back from base/memory to base.

tools/sort-headers.py

 #!/usr/bin/python
 # 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.
 
 """Given a filename as an argument, sort the #include/#imports in that file.
 
 Shows a diff and prompts for confirmation before doing the deed.
 """
 
@@ skipping 24 matching lines @@
   """Sorting comparator key used for comparing two #include lines.
   Returns the filename without the #include/#import prefix.
   """
   for prefix in ('#include ', '#import '):
     if line.startswith(prefix):
       line = line[len(prefix):]
       break
   # <windows.h> needs to be before other includes, so return a key
   # that's less than all other keys.
   if line.lstrip().startswith('<windows.h>'):
-    return ''
+    return '    0'
+  if line.lstrip().startswith('<unknwn.h>'):
+    return '    1'
   return line
 
 
 def IsInclude(line):
   """Returns True if the line is an #include/#import line."""
   return line.startswith('#include ') or line.startswith('#import ')
 
 
 def SortHeader(infile, outfile):
   """Sorts the headers in infile, writing the sorted file to outfile."""
@@ skipping 37 matching lines @@
     finally:
       try:
         os.remove(fixfilename)
       except OSError:
         # If the file isn't there, we don't care.
         pass
 
 
 if __name__ == '__main__':
   main()