Fix crash in nvpr text after abandoning context

Don't implement GlyphPathRange::onAbandon/onRelease. Its path range is
also a GrGpuResource, registered with the gpu, and will automatically
handle abandoning and releasing the actual GL objects. Don't delete
the path range early, it is assumed to be a valid pointer throughout
the entire lifetime of GlyphPathRange.

BUG=skia:
R=bsalomon@google.com, kkinnunen@nvidia.com

Author: cdalton@nvidia.com

Review URL: https://codereview.chromium.org/452273003
1 file changed