Remove GrFlushToGpuDrawTarget and move functionality up to GrDrawTarget.

src/gpu/GrFlushToGpuDrawTarget.h

-/*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef GrFlushToGpuDrawTarget_DEFINED
-#define GrFlushToGpuDrawTarget_DEFINED
-
-#include "GrDrawTarget.h"
-
-class GrIndexBufferAllocPool;
-class GrVertexBufferAllocPool;
-class GrGpu;
-
-/**
- * Base class for draw targets that accumulate index and vertex data in buffers for deferred.
- * When draw target clients reserve geometry this subclass will place that geometry into
- * preallocated vertex/index buffers in the order the requests are made (assuming the requests fit
- * in the preallocated buffers).
- */
-class GrFlushToGpuDrawTarget : public GrClipTarget {
-public:
-    GrFlushToGpuDrawTarget(GrGpu*, GrVertexBufferAllocPool*,GrIndexBufferAllocPool*);
-
-    /**
-     * Empties the draw buffer of any queued up draws. This must not be called while inside an
-     * unbalanced pushGeometrySource().
-     */
-    void reset();
-
-    /**
-     * This plays any queued up draws to its GrGpu target. It also resets this object (i.e. flushing
-     * is destructive). This buffer must not have an active reserved vertex or index source. Any
-     * reserved geometry on the target will be finalized because it's geometry source will be pushed
-     * before flushing and popped afterwards.
-     */
-    void flush();
-
-protected:
-    GrGpu* getGpu() { return fGpu; }
-    const GrGpu* getGpu() const{ return fGpu; }
-
-    GrVertexBufferAllocPool* getVertexAllocPool() { return fVertexPool; }
-    GrIndexBufferAllocPool* getIndexAllocPool() { return fIndexPool; }
-
-private:
-    virtual void onReset() = 0;
-
-    virtual void onFlush() = 0;
-
-    bool onCanCopySurface(const GrSurface* dst,
-                          const GrSurface* src,
-                          const SkIRect& srcRect,
-                          const SkIPoint& dstPoint) override;
-    bool onInitCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) override;
-
-    SkAutoTUnref<GrGpu>                 fGpu;
-    GrVertexBufferAllocPool*            fVertexPool;
-    GrIndexBufferAllocPool*             fIndexPool;
-    bool                                fFlushing;
-
-    typedef GrClipTarget INHERITED;
-};
-
-#endif