GitLab

This is a reland of 2a5578c2

Fix the build failure in
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/linux-chromeos-dbg/9034

Add ASH_EXPORT on AssistantQueryHistory because it is included in ash_unittests,
or else build with is_debug = true fails.

Original change's description:
> Support key up/down to move through query history.
>
> We follow the behavior of linux shell:
> (1) Whenever there is a new query, the iterator is reset to the new
>     query.
> (2) Prev of the iterator moves till the first query and stick there.
> (3) Next of the iterator can move beyond last query and get an empty
>     query.
>
>
> Bug: b:119504796
> Change-Id: Iee1247359df78b8e2189fa86c3bd1b8b6ebfe612
> Reviewed-on: https://chromium-review.googlesource.com/c/1334271
> Commit-Queue: Yilei Li <yileili@google.com>
> Reviewed-by: Tao Wu <wutao@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#609888}

Bug: b:119504796
Change-Id: I445b022caef9e82272a07c3a8949e1decc4aaeff
Reviewed-on: https://chromium-review.googlesource.com/c/1345811Reviewed-by: Tao Wu <wutao@chromium.org>
Commit-Queue: Yilei Li <yileili@google.com>
Cr-Commit-Position: refs/heads/master@{#610951}