Ensure AppCompat can load it's theme before Activity.onCreate()

There are situations where the content view can be set
in Activity.onCreate(), which is before AppCompat has had a chance
to load it's window features from the theme. This leads to a
AppCompat not knowing what decor to install, and throwing an
exception.

BUG: 21475077
Change-Id: I0e39398cb011965260fffdf08b660d937478e249
1 file changed