Sample app uses Ganesh before calling SkGraphics::Init().

This causes inconsistent hashing.  Before Init(), we use portable Murmur3,
after a faster SSE4.2-based hash.

To fix, call SkGraphics::Init() first.

BUG=skia:5625
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2229853002

Review-Url: https://codereview.chromium.org/2229853002
3 files changed