Rename GrRTC::drawBatch to addDrawOp and local vars in GrRTC.cpp

Change-Id: Ic8b896d7779844de5f82f9f0e630508578a8f61d
Reviewed-on: https://skia-review.googlesource.com/5647
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
16 files changed