Reland "Quota: Add SequenceChecker to QuotaManager"

This is a reland of d82ad3d0eee4f2b98d6f7be7fb2489c55713da69

In the original CL, QuotaManager was modified in two ways:
  1. Added SequenceChecker
  2. Remove custom deleter and inherit RefCountedDeleteOnSequence

In the reland, I split out the latter into a separate CL and this CL
only adds SequenceChecker to QuotaManager.  This was done to
minimize the impact of a potential revert.

RefCountedDeleteOnSequence CL:

Original change's description:
> Quota: Add SequenceChecker to QuotaManager
> Change-Id: I7caa60bf82fdcd63469d58afa0e29f893795ae32
> Reviewed-on:
> Commit-Queue: Victor Costan <>
> Reviewed-by: Victor Costan <>
> Cr-Commit-Position: refs/heads/master@{#631891}

Change-Id: Ia6076d9076e0e0f646b4286a8533ca0a964e3903
Commit-Queue: Jarryd Goodman <>
Reviewed-by: Victor Costan <>
Cr-Commit-Position: refs/heads/master@{#634892}
2 files changed