Make pipeline getter a GrDrawBatch::pipeline() a protected method.

This is a baby step towards making getting GrPipeline off GrDrawBatch.

Change-Id: I7e0331f3bcd45d1920a150fefb91e307efeeced1
Reviewed-on: https://skia-review.googlesource.com/5327
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
1 file changed