Google login - update module to support addition into Android Studio build system.

Change-Id: Ie60def3b3277e7a085ff7952d0b905f245acce19
Merge "Google login - update module to support addition into Android Studio build system." into idea133
Fix compilation error.

Change-Id: I5e3fabf4cd707c7165ee5b6bf72508a3f37d8c8a
Merge "Fix compilation error." into idea133
Updated code to changes made to GradleSyncListener.

This CL depends on
https://android-review.googlesource.com/102478

Change-Id: I4e7105a74dee95c401a31355588c20ab3dcca404
Merge "Updated code to changes made to GradleSyncListener." into idea133
Use JUnit3 as dependency instead of junit.jar

Change-Id: Id264b8c6f4a8aeb532b35465d7c14c8d917a6ba4
Merge "Use JUnit3 as dependency instead of junit.jar" into idea133
Rename getMainSourceSet -> getMainSourceProvider

Change-Id: I06f25c1c00ab236fa4c68f42be71da83562fc0fd
Merge "Rename getMainSourceSet -> getMainSourceProvider" into idea133
merge in ub-tools-idea133-release history after reset to a8d3d1fd4ffc9d0e0b11fc9ba2fa5c22873f0962