Update how we send draws to gpu backend to reduce state setting.

src/gpu/batches/GrTestBatch.h

Index: src/gpu/batches/GrTestBatch.h
diff --git a/src/gpu/batches/GrTestBatch.h b/src/gpu/batches/GrTestBatch.h
index ee92816e4b0d164998a2c8d44d4f64e27a20b1fa..c20d23312f617a5c80f24078a1f42520ee8a4426 100644
--- a/src/gpu/batches/GrTestBatch.h
+++ b/src/gpu/batches/GrTestBatch.h
@@ -60,7 +60,7 @@ protected:
 
 private:
     void onPrepareDraws(Target* target) const override {
-        target->initDraw(fGeometryProcessor, this->pipeline());
+        target->initDraw(fGeometryProcessor, kTriangles_GrPrimitiveType);
         this->generateGeometry(target);
     }