Currently test code use getActivity to get DRT's assets. However
the side effect is that this will actually launch the activity.
This is not affecting any tests yet, however there are cleaner
ways to do this. The instrumentation framework provides a
getTargetContext call which will give access to app under test's
context, and therefore granting access to its assets.
Change-Id: I0560b0fa5681f80bcb9296beec3fd0549c40cc8e
Hopefully this gives enough time for more memory recycling. Because it is observed that several seconds after a suite is run, the memory usage could drop by 1-2M.
