Start using RenderTargetProxy (omnibus)

src/gpu/GrRenderTargetContextPriv.h

Index: src/gpu/GrRenderTargetContextPriv.h
diff --git a/src/gpu/GrRenderTargetContextPriv.h b/src/gpu/GrRenderTargetContextPriv.h
index 83a334b012dc06628e554603cfc3a47e98f9c9eb..c7180726f81aeba7e5e45e1950fa12ce46d10cfd 100644
--- a/src/gpu/GrRenderTargetContextPriv.h
+++ b/src/gpu/GrRenderTargetContextPriv.h
@@ -85,6 +85,10 @@ public:
                                const GrUserStencilSettings* = nullptr,
                                bool snapToCenters = false);
 
+    GrContext* context() { return fRenderTargetContext->fContext; }
+
+    GrRenderTargetProxy* accessRTP() { return fRenderTargetContext->fRenderTargetProxy.get(); }
+
 private:
     explicit GrRenderTargetContextPriv(GrRenderTargetContext* renderTargetContext)
         : fRenderTargetContext(renderTargetContext) {}