BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2220633002 Review-Url: https://codereview.chromium.org/2220633002
Merge branch 'shadow-gm' into shadow-sample Added variable size shadow maps. Also fixed some bugs BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2198933002 Review-Url: https://codereview.chromium.org/2198933002