Simplify empty-clip check.

No measurable playback speed difference, but simpler code.

This makes sense: I'm seeing SkRecordDraw at ~0.25% of playback cost.  We can
pretty much do whatever we want in there for free if it helps avoid real work.

BUG=skia:2378
R=fmalita@chromium.org, mtklein@google.com, reed@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/260143002

git-svn-id: http://skia.googlecode.com/svn/trunk@14419 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed