Looking for the source code of the new Google Calendar Time and Date Picker Widgets

I would like to use the brand new Date Picker and Time Picker that is now part of the new official Google Calendar App.

http://googlesystem.blogspot.de/2013/05/new-google-calendar-controls-for-android.html

All I found so far is this source code on grepcode but I can't find the widgets or fragments or activities there.

http://grepcode.com/snapshot/repository.grepcode.com/java/ext/com.google.android/android-apps/4.2.2_r1/

Is that already public or is there something similar out there?