Check for xfer barriers in GrBatch, auto-issue barriers in GrGpu

src/gpu/GrTessellatingPathRenderer.cpp

Index: src/gpu/GrTessellatingPathRenderer.cpp
diff --git a/src/gpu/GrTessellatingPathRenderer.cpp b/src/gpu/GrTessellatingPathRenderer.cpp
index 4d23217d0375f596133766a09823665866d15f04..480952119bbb893a8115a626242f85540d906f56 100644
--- a/src/gpu/GrTessellatingPathRenderer.cpp
+++ b/src/gpu/GrTessellatingPathRenderer.cpp
@@ -1576,9 +1576,7 @@ public:
         batchTarget->draw(vertices);
     }
 
-    bool onCombineIfPossible(GrBatch*) override {
-        return false;
-    }
+    bool onCombineIfPossible(GrBatch*, const GrCaps&) override { return false; }
 
 private:
     TessellatingPathBatch(const GrColor& color,