Change how "small view updates" are calculated.

Fixes: 328508522

Changes small views to be anything smaller than 40dp x 40dp
or any one dimension smaller than 10dp.

Also adds reasoning to the trace to improve understanding
of why a frame rate is chosen.

Test: New tests
Change-Id: I227e221d34a8fb81a1791cbfc037758a9eccf1b2
5 files changed