156         List chainA, List chainB, const GrCaps& caps, GrOpMemoryPool* pool,  in DoConcat()  argument
175         bool canBackwardMerge = noSkip || can_reorder(chainB.head()->bounds(), skipBounds);  in DoConcat()
182                 auto result = a->combineIfPossible(chainB.head(), caps);  in DoConcat()
186                           chainB.head()->name(), chainB.head()->uniqueID(), a->name(),  in DoConcat()
190                 GR_AUDIT_TRAIL_OPS_RESULT_COMBINED(auditTrail, a, chainB.head());  in DoConcat()
192                     pool->release(chainB.popHead());  in DoConcat()
201                     pool->release(chainB.popHead());  in DoConcat()
202                     chainB.pushHead(std::move(detachedA));  in DoConcat()
205                         return chainB;  in DoConcat()
215                         canBackwardMerge && can_reorder(chainB.head()->bounds(), a->bounds());  in DoConcat()
222             chainA.pushTail(chainB.popHead());  in DoConcat()
225     } while (!chainB.empty());  in DoConcat()