Do not spam the debugging information

Currently, whenever there's a frame being rendered, we log such an
invalidation event. This is very spammy for animations or frame rates
test.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2276303003

Review-Url: https://codereview.chromium.org/2276303003
1 file changed