Track 'external_zlib' from cm

Change-Id: I9dbce20ca28509facc89b9d35a7045167c4f657e
Track 'e2fsprogs' from CM

Change-Id: I23ff738c3c67be56475d9da586833b517726bd62
Track 'external_chromium_org' from cm

fixes gms force closes

Change-Id: Ibb3be617d25452441c91e4a1a5e679b10c1f2134