base

Enforce FloatingToolbar themes.

This ensures that theme attribute values that affect the look and
feel of the FloatingToolbar views are the ones specified in the
framework.
The aim is to avoid apps modifying the toolbar's look and feel in
unexpected ways by overriding Theme attributes.

Bug: 21957785

Change-Id: Idd472b4e8511f0a039cd07f98b1fd3ce93ae97fa