Add new test cases for Android shadow sample.

Adds examples of circular reveal and XY tilt.

BUG=skia:6119

Change-Id: I9e7e7729e1d74249e985bc185cb4936f70a75544
Reviewed-on: https://skia-review.googlesource.com/9540
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
1 file changed