[automerged blank] Introduce Build.VERSION.KNOWN_CODENAMES. 2p: 57007c7601

Blank merge reason: Change-Id I0c8df8e767ea61b27bb53da53fb6c9b2c842dbbc with SHA-1 434ef186e6 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16774608

Bug: 211747008
Change-Id: I22e3db65829766085dfae1758fa3c0745eb760f1