AutoSize TextView (part 10) - final APIs

Gets rid of setting auto-size configuration
items one by one and instead provides setter
constructs that take all the params needed
to auto-size. This version is much closer to
how this feature can be set up from XML
attributes and also provides no doubt about
validation failures.

Bug: 32221168
Bug: 34494052
Test: in attached topic CL
Change-Id: Ic70ad43d5c6739ee312ea24984534a35c49c17dc