Require more precise exclusions in remove_bundled_libraries.py

build/linux/unbundle/remove_bundled_libraries.py

 #!/usr/bin/env python
 # Copyright 2013 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.
 
 """
 Removes bundled libraries to make sure they are not used.
 
 See README for more details.
 """
@@ skipping 29 matching lines @@
     root_relpath = os.path.relpath(root, source_tree_root)
     if 'third_party' not in root_relpath.split(os.sep):
       continue
 
     for f in files:
       path = os.path.join(root, f)
       relpath = os.path.relpath(path, source_tree_root)
 
       excluded = False
       for exclusion in args:
+        # Require precise exclusions. Find the right-most third_party
+        # in the relative path, and if there is more than one ignore
+        # the exclusion if it's completely contained within the part
+        # before right-most third_party path component.
+        split = relpath.rsplit(os.sep + 'third_party' + os.sep, 1)
+        if len(split) > 1 and split[0].startswith(exclusion):
+          continue
+
         if relpath.startswith(exclusion):
           # Multiple exclusions can match the same path. Go through all of them
           # and mark each one as used.
           exclusion_used[exclusion] = True
           excluded = True
       if excluded:
         continue
 
       # Deleting gyp files almost always leads to gyp failures.
       # These files come from Chromium project, and can be replaced if needed.
@@ skipping 25 matching lines @@
 
   if not options.do_remove:
     print ('To actually remove files printed above, please pass ' +
            '--do-remove flag.')
 
   return exit_code
 
 
 if __name__ == '__main__':
   sys.exit(DoMain(sys.argv[1:]))