Skia is moving away from always returning the clip state (open vs. closed) on every clip* call. Doing so isn't free in all cases (e.g., when the GPU back-end is being used) so we would like to limit the extra work to only those clients that need it.

Review URL: https://codereview.chromium.org/178223002

git-svn-id: svn://svn.chromium.org/blink/trunk@167809 bbb929c8-8fbe-4397-9dbb-9b2b20218538