Define a build target for google-api-java-client v1.20.0 prebuild

Test: mma
Bug: 38091908
Change-Id: I5d55fe917a4f869995c4ac91d60fb6ba975bf29c
Merged-In: I5d55fe917a4f869995c4ac91d60fb6ba975bf29c
(cherry picked from commit 0303fc28bba3c9d2e4320b8914a8cb140678cecf)
1 file changed