Use 'frog' in apidoc. Also fix broken dependencies.

dart/utils/apidoc/scripts/list_files.py

 #!/usr/bin/env python
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 # Traverses apidoc and dartdoc and lists all possible input files that are
 # used when building API documentation. Used by gyp to determine when apidocs
 # need to be regenerated (see `apidoc.gyp`).
 
 # TODO(rnystrom): Port this to dart. It can be run before dart has been built
 # (which is when this script is invoked by gyp) by using the prebuild dart in
 # tools/testing/bin.
 
 import os
 import sys
 
+def handle_walk(root, directories, files, start):
+  for filename in files:
+    if filename.endswith((
+        '.css', '.dart', '.ico', '.js', '.json', '.png', '.sh', '.txt')):
+      print os.path.relpath(os.path.join(root, filename), start=start)
+
+
 def main(argv):
   if len(argv) == 1:
-    dir = os.curdir
+    dir = os.path.join(os.path.dirname(os.path.realpath(__file__)),
+                       os.pardir, os.pardir, os.pardir)
   else:
     dir = argv[1]
-  for root, directories, files in os.walk(dir):
-    if root == os.curdir:
-      directories[0:] = [
-        os.path.join('utils', 'apidoc'),
-        os.path.join('lib', 'dartdoc')
-      ]
-
-    for filename in files:
-      if filename.endswith((
-          '.css', '.dart', '.ico', '.js', '.json', '.png', '.sh', '.txt')):
-        print os.path.relpath(os.path.join(root, filename))
+  start = os.path.join(dir, 'utils', 'apidoc')
+  for root, directories, files in os.walk(os.path.join(dir, 'utils', 'apidoc')):
+    handle_walk(root, directories, files, start)
+  for root, directories, files in os.walk(os.path.join(dir, 'lib', 'dartdoc')):
+    handle_walk(root, directories, files, start)
 
 if __name__ == '__main__':
-  sys.exit(main(sys.argv))
+  sys.exit(main(sys.argv))