tree 6f38acb2129c3b0da5318d67a26bfc1ee425fdac
parent 3475b482fefaed065d634f235140f5b7e9b6df01
author Tom Sepez <tsepez@chromium.org> 1557773508 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1557773508 +0000

Make CXFA_LayoutItem inherit from fxcrt::TreeNode<>.

Long-term, we'd like to manage CXFA_LayoutItem via RetainedTreeNodes,
so this CL converts to a similar API before tackling the issue of
memory management itself.

Change-Id: I89d0ebbf564a236fe7a85dc82f334628d7965745
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/53390
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>