Use the appropriate default icon

ComponentInfo subclasses and ApplicationInfo have different ways to retrieving
the default icon. Previously, in CL I2db300a69a08030eacc245ee91556f0443ba5878
we defaulted everything to the green Android. This makes sure that they get the
right default.

Bug: 16630068
Change-Id: Ifa499eac6f1543523d6ecf0831175bfd6b772edb
4 files changed