Add tests for Outline#setConvexPath

Bug: 131759669
Test: This

With Ice88d0995750e066320cb175a87f8ae70ce3aeed, setConvexPath no longer
asserts convexPath.isConvex(). Add a test that verifies this. Also add a
test that verifies that a non-convex path is ignored for clipping as is
any path Outline except for rect, round rect, or circle. Update out of
date comments in a related test.

Change-Id: I5eca77e1a60e484e4e118b7e464a88363c539ca9
2 files changed