Make GrVertexBatch objects hold their own draws during GrDrawTarget flush

src/gpu/GrCommandBuilder.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrCommandBuilder_DEFINED
 #define GrCommandBuilder_DEFINED
 
 #include "GrTargetCommands.h"
 
-class GrBufferedDrawTarget;
+class GrGpu;
+class GrResourceProvider;
 
 class GrCommandBuilder : ::SkNoncopyable {
 public:
     typedef GrTargetCommands::Cmd               Cmd;
     typedef GrTargetCommands::StateForPathDraw  State;
 
     static GrCommandBuilder* Create(GrGpu* gpu, bool reorder);
 
     virtual ~GrCommandBuilder() {}
 
     void reset() { fCommands.reset(); }
-    void flush(GrBufferedDrawTarget* bufferedDrawTarget) { fCommands.flush(bufferedDrawTarget); }
+    void flush(GrGpu* gpu, GrResourceProvider* rp) { fCommands.flush(gpu, rp); }
 
     virtual Cmd* recordClearStencilClip(const SkIRect& rect,
                                         bool insideClip,
                                         GrRenderTarget* renderTarget);
     virtual Cmd* recordDiscard(GrRenderTarget*);
     virtual Cmd* recordDrawBatch(GrDrawBatch*, const GrCaps&) = 0;
     virtual Cmd* recordStencilPath(const GrPipelineBuilder&,
                                    const GrPathProcessor*,
                                    const GrPath*,
                                    const GrScissorState&,
@@ skipping 23 matching lines @@
 
 protected:
     typedef GrTargetCommands::DrawBatch DrawBatch;
     typedef GrTargetCommands::StencilPath StencilPath;
     typedef GrTargetCommands::DrawPath DrawPath;
     typedef GrTargetCommands::DrawPaths DrawPaths;
     typedef GrTargetCommands::Clear Clear;
     typedef GrTargetCommands::ClearStencilClip ClearStencilClip;
     typedef GrTargetCommands::CopySurface CopySurface;
 
-    GrCommandBuilder(GrGpu* gpu) : fCommands(gpu) {}
+    GrCommandBuilder() {}
 
     GrTargetCommands::CmdBuffer* cmdBuffer() { return fCommands.cmdBuffer(); }
-    GrBatchTarget* batchTarget() { return fCommands.batchTarget(); }
-
 private:
     GrTargetCommands fCommands;
 
 };
 
 #endif