In the review for JDK-8227434 the question arose whether the naming of the methods to get predictions in G1Predictions (and wrappers around it) couldn't be improved for readability.

I.e. change

 get_new_prediction(TruncatedSeq const* seq) const
 get_new_unit_prediction(TruncatedSeq const* seq) const
 get_new_lower_zero_bound_prediction(TruncatedSeq const* seq) const

to

 predict(TruncatedSeq const* seq) const
 predict_in_unit_interval(TruncatedSeq const* seq) const
 predict_zero_bounded(TruncatedSeq const* seq) const

Implement this.