cc: Always keep the PictureLayerImpl::twin_layer_ pointer valid.

cc/debug/rasterize_and_record_benchmark_impl.cc

Index: cc/debug/rasterize_and_record_benchmark_impl.cc
diff --git a/cc/debug/rasterize_and_record_benchmark_impl.cc b/cc/debug/rasterize_and_record_benchmark_impl.cc
index 8984da231ede83fb84db4054d420ce009c23a0ae..0310b1013161b60d41d67345e30f489f5502ebfd 100644
--- a/cc/debug/rasterize_and_record_benchmark_impl.cc
+++ b/cc/debug/rasterize_and_record_benchmark_impl.cc
@@ -109,9 +109,9 @@ class FixedInvalidationPictureLayerTilingClient
   // client. Avoids sharing tiles in this area.
   const Region* GetPendingInvalidation() override { return &invalidation_; }
 
-  const PictureLayerTiling* GetTwinTiling(
+  const PictureLayerTiling* GetPendingOrActiveTwinTiling(
       const PictureLayerTiling* tiling) const override {
-    return base_client_->GetTwinTiling(tiling);
+    return base_client_->GetPendingOrActiveTwinTiling(tiling);
   }
 
   PictureLayerTiling* GetRecycledTwinTiling(