53e595d1f3
Summary: There were three implementations of VectorIterator (util/vector_iterator, test_util/testutil.h and LoggingForwardVectorIterator). Merged them into one class to increase code coverage/testing and reduce duplication. Pull Request resolved: https://github.com/facebook/rocksdb/pull/8901 Reviewed By: pdillinger Differential Revision: D31022673 Pulled By: mrambacher fbshipit-source-id: 8e3acbd2dfd60b4df609d02cc72846de2389d531