Switch GrMeshDrawOp::Target to be the stand alone GrMeshDrawTarget class

The Tessellator classes will survive in the NGA and they use
GrMeshDrawOp::Target - but GrMeshDrawOp will not survive.

This is a prelude to making all the remaining GrOp-derived classes OGA-only.

Bug: skia:11837
Change-Id: I62dc92e5f42d672342113f12dcedf3435fab993f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/419198
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
diff --git a/src/gpu/ops/GrMeshDrawOp.cpp b/src/gpu/ops/GrMeshDrawOp.cpp
index 0e2e923..da42d40 100644
--- a/src/gpu/ops/GrMeshDrawOp.cpp
+++ b/src/gpu/ops/GrMeshDrawOp.cpp
@@ -16,7 +16,7 @@
 
 void GrMeshDrawOp::onPrepare(GrOpFlushState* state) { this->onPrepareDraws(state); }
 
-void GrMeshDrawOp::createProgramInfo(Target* target) {
+void GrMeshDrawOp::createProgramInfo(GrMeshDrawTarget* target) {
     this->createProgramInfo(&target->caps(),
                             target->allocator(),
                             target->writeView(),
@@ -52,7 +52,7 @@
 
 //////////////////////////////////////////////////////////////////////////////
 
-GrMeshDrawOp::PatternHelper::PatternHelper(Target* target, GrPrimitiveType primitiveType,
+GrMeshDrawOp::PatternHelper::PatternHelper(GrMeshDrawTarget* target, GrPrimitiveType primitiveType,
                                            size_t vertexStride, sk_sp<const GrBuffer> indexBuffer,
                                            int verticesPerRepetition, int indicesPerRepetition,
                                            int repeatCount, int maxRepetitions) {
@@ -60,7 +60,7 @@
                indicesPerRepetition, repeatCount, maxRepetitions);
 }
 
-void GrMeshDrawOp::PatternHelper::init(Target* target, GrPrimitiveType primitiveType,
+void GrMeshDrawOp::PatternHelper::init(GrMeshDrawTarget* target, GrPrimitiveType primitiveType,
                                        size_t vertexStride, sk_sp<const GrBuffer> indexBuffer,
                                        int verticesPerRepetition, int indicesPerRepetition,
                                        int repeatCount, int maxRepetitions) {
@@ -87,12 +87,13 @@
                                firstVertex);
 }
 
-void GrMeshDrawOp::PatternHelper::recordDraw(Target* target, const GrGeometryProcessor* gp) const {
+void GrMeshDrawOp::PatternHelper::recordDraw(GrMeshDrawTarget* target,
+                                             const GrGeometryProcessor* gp) const {
     target->recordDraw(gp, fMesh, 1, fPrimitiveType);
 }
 
 void GrMeshDrawOp::PatternHelper::recordDraw(
-        Target* target,
+        GrMeshDrawTarget* target,
         const GrGeometryProcessor* gp,
         const GrSurfaceProxy* const primProcProxies[]) const {
     target->recordDraw(gp, fMesh, 1, primProcProxies, fPrimitiveType);
@@ -100,7 +101,9 @@
 
 //////////////////////////////////////////////////////////////////////////////
 
-GrMeshDrawOp::QuadHelper::QuadHelper(Target* target, size_t vertexStride, int quadsToDraw) {
+GrMeshDrawOp::QuadHelper::QuadHelper(GrMeshDrawTarget* target,
+                                     size_t vertexStride,
+                                     int quadsToDraw) {
     sk_sp<const GrGpuBuffer> indexBuffer = target->resourceProvider()->refNonAAQuadIndexBuffer();
     if (!indexBuffer) {
         SkDebugf("Could not get quad index buffer.");