Add stubs needed to enable javac to compile lambdas

This enables framework.jar code to include lambdas.
framework.jar is still built with javac (as well as
jack) for things like doclava.

Bug: 26753820
(cherry picked from commit 801f90e61b971984c92767acd6fb62d56911664b)

Change-Id: Icdc9e003b09bd1e14e991b32934b3c4c4a268b1a