Android development of the widevine CDM has been done on the jb-mr2 branch of the cdm code base. This CL contains a merge of that jb-mr2 work to CDM master, and also reflects the evolution of the common Modular DRM code base since jb-mr2 branched. Change-Id: I1d7e1a12d092c00044a4298261146cb97808d4ef