Extract robolectric-fakehttp.
Hide references to robolectric-shadows inside of ShadowsAdapter.
Inline Robolectric methods that use ShadowLooper.
Extract FakeHttp from Robolectric, and put it in robolectric-shadows.
Move methods out of Robolectric that belong in robolectric-shadows.
Extract ShadowsAdapter interface from Api18ShadowsAdapter.
Hide references to robolectric-shadows inside of ShadowsAdapter.
Remove robolectric's compile-time dependency on robolectric-shadows.
Use install-shadows.sh to drive Travis build.