Implement SkiaCanvasProxy::onDrawArc

Test: UiRendering CTS SweepTests with picture mode turned on and
drawBitmapMesh turned off (it's not implemented yet).

This should fix BUG:34306056, and part of BUG:34871089 (the drawArc part
of SweepTests in picture mode).

BUG:34306056
BUG:34871089

Change-Id: I8fdcf72ddb4a0bfccedfd7e4e374a1ec5df17d75
(cherry picked from commit 538b6359cf81b14322141089161f20291295d6d3)
2 files changed