Don't pass pipeline to GrBatch::generateGeometry()

gm/convexpolyeffect.cpp

Index: gm/convexpolyeffect.cpp
diff --git a/gm/convexpolyeffect.cpp b/gm/convexpolyeffect.cpp
index 1599e7a65d36153f8aaacafd204cd6fd82e035ac..665bfe02f61de2dd31118d3b860f4004d6572ec5 100644
--- a/gm/convexpolyeffect.cpp
+++ b/gm/convexpolyeffect.cpp
@@ -56,7 +56,7 @@ private:
         return &fGeometry;
     }
 
-    void onGenerateGeometry(GrBatchTarget* batchTarget, const GrPipeline* pipeline) override {
+    void onGenerateGeometry(GrBatchTarget* batchTarget) override {
         size_t vertexStride = this->geometryProcessor()->getVertexStride();
         SkASSERT(vertexStride == sizeof(SkPoint));
         QuadHelper helper;