message: Move to do into comment.
diff: @@ -104,9 +104,9 @@ class OpHint(object):
  that make up the pseudo op. A similar process is done to any output that
  is to be exported from the current op.
  - TODO(aselle): When TensorFlow functions functionality works for arbitrary
  - constructs, this mechanism can be retired and changed to use python defun's.
  """
  + # TODO(aselle): When TensorFlow functions functionality works for arbitrary
  + # constructs, this mechanism can be retired and changed to use python defun's.
  # Attr constants that are used for representation in the GraphDef. These
  # will be used on every Identity op that is involved in a total OpHint.
  