Enable tonal color for shadows by default.

This change swaps the sense of the tonal color shadow flag, so
tonal color will always be on unless explicitly disabled.

Change-Id: I56ce4228022cf59b570cd7461327628cf7fe7173
Reviewed-on: https://skia-review.googlesource.com/73900
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
4 files changed