Cleanup GrDrawTarget now that all paths lead to GrBatch

src/gpu/GrImmediateDrawTarget.cpp

-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "GrImmediateDrawTarget.h"
-
-#include "GrGpu.h"
-#include "GrPipeline.h"
-#include "GrRenderTarget.h"
-#include "SkRect.h"
-#include "SkTypes.h"
-
-#include "batches/GrDrawBatch.h"
-#include "batches/GrVertexBatch.h"
-
-GrImmediateDrawTarget::GrImmediateDrawTarget(GrContext* context)
-    : INHERITED(context)
-    , fDrawID(0) {
-}
-
-GrImmediateDrawTarget::~GrImmediateDrawTarget() {
-    this->reset();
-}
-
-void GrImmediateDrawTarget::onDrawBatch(GrBatch* batch) {
-
-#if 0
-    // TODO: encapsulate the specialization of GrVertexBatch in GrVertexBatch so that we can
-    // remove this cast. Currently all GrDrawBatches are in fact GrVertexBatch.
-    GrVertexBatch* vertexBatch = static_cast<GrVertexBatch*>(batch);
-    vertexBatch->prepareDraws(&fBatchTarget);
-    vertexBatch->setNumberOfDraws(fBatchTarget.numberOfDraws());
-
-    fBatchTarget.preFlush();
-    fBatchTarget.flushNext(vertexBatch->numberOfDraws());
-    fBatchTarget.postFlush();
-#endif
-}
-
-void GrImmediateDrawTarget::onReset() {}
-
-void GrImmediateDrawTarget::onFlush() {
-    ++fDrawID;
-}