Add SampleApp slide with animating lightmapped objects & transparency

This is pulled out of the drawLitAtlas CL (may it someday land). It does nicely demonstrate animating normal mapped objects and normal maps combined with partially transparent diffuse textures.

It is a crude Asteroids game.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2026393005

TBR=reed@google.com

Review-Url: https://codereview.chromium.org/2026393005

1 files changed, 1 insertions, 1 deletions

diff --git a/include/core/SkLights.h b/include/core/SkLights.h
index 0a4fb8153e..c5c54276a3 100644
--- a/include/core/SkLights.h
+++ b/include/core/SkLights.h
@@ -61,7 +61,7 @@ public:
             }
         }
 
-        const sk_sp<SkLights> finish() {
+        sk_sp<SkLights> finish() {
             return fLights;
         }