Start using GrGpuCommandBuffer in GrDrawTarget.

src/gpu/batches/GrStencilPathBatch.h

Index: src/gpu/batches/GrStencilPathBatch.h
diff --git a/src/gpu/batches/GrStencilPathBatch.h b/src/gpu/batches/GrStencilPathBatch.h
index 05b55efafa37142f3927522bf132d9732d4e7601..6c6bce2eedd28725a0cda0989cd01fa33d212afd 100644
--- a/src/gpu/batches/GrStencilPathBatch.h
+++ b/src/gpu/batches/GrStencilPathBatch.h
@@ -65,7 +65,7 @@ private:
 
     void onPrepare(GrBatchFlushState*) override {}
 
-    void onDraw(GrBatchFlushState* state) override {
+    void onDraw(GrBatchFlushState* state, GrGpuCommandBuffer* buffer) override {
         GrPathRendering::StencilPathArgs args(fUseHWAA, fRenderTarget.get(), &fViewMatrix,
                                               &fScissor, &fStencil);
         state->gpu()->pathRendering()->stencilPath(args, fPath.get());

[jvanverth1, 2016/06/17 15:25:16]

What happens with pathRendering? Does it get inlined with the GpuCommandBuffer
somehow?

[egdaniel, 2016/06/17 15:57:35]

Well in Vulkan we never get Path Batches. In GL the command buffers just
immediately forward the calls to the gpu anyways. So I figured this was easier
than having command buffer need to be able to return a PathRendering instance to
send this calls to.

[jvanverth1, 2016/06/17 16:49:13]

Acknowledged.