Start using RenderTargetProxy (omnibus)

src/gpu/batches/GrCopySurfaceBatch.h

Index: src/gpu/batches/GrCopySurfaceBatch.h
diff --git a/src/gpu/batches/GrCopySurfaceBatch.h b/src/gpu/batches/GrCopySurfaceBatch.h
index c987d0d5df1b4dd32982606f9801d321828f0e47..f93b1f2aed4fce4c3715359b743f67f1efa91921 100644
--- a/src/gpu/batches/GrCopySurfaceBatch.h
+++ b/src/gpu/batches/GrCopySurfaceBatch.h
@@ -36,7 +36,7 @@ public:
         GrRenderTarget* rt = fDst.get()->asRenderTarget();
         return rt ? rt->uniqueID() : 0;
     }
-    GrRenderTarget* renderTarget() const override { return nullptr; }
+    GrRenderTargetProxy* rtp() const override { return nullptr; }
 
     SkString dumpInfo() const override {
         SkString string;