GitLab

A type converter for unique_ptr type should be able to accept a getter
which returns the raw pointer type. This CL adds such support. Also it
adds such a property in ToggleImageButton class as an example.

Bug: 1168309
Change-Id: I49488d475cd70a7441f4f7e5918929c8e5b35638
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2639655Reviewed-by: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Wei Li <weili@chromium.org>
Cr-Commit-Position: refs/heads/master@{#846230}