Remove GrPipelineOptimizations computation from GrPipeline::init and nest in GrMeshDrawOp.

Change-Id: I4a702c83857606c1cb050294c408922eef5769ea
Reviewed-on: https://skia-review.googlesource.com/10414
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
35 files changed