RFR: 8299953: Merge ContiguousSpaceDCTOC into DirtyCardToOopClosure [v2]

[Albert Mingkun Yang]

On Thu, 26 Jan 2023 10:35:41 GMT, Ivan Walulya <iwalulya at openjdk.org> wrote:

> can you please replace DirtyCardToOopClosure__walk_mem_region_with_cl_DEFN with templates. You can do it in a follow up change if you prefer.

I will look into it in another PR.

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PR: https://git.openjdk.org/jdk/pull/11938