tree cab0ca95ed9b316bb9f4a0d778fd525124d50ae7
parent d0bbccdd32113baf95ae16565c0314166d989638
author tsepez <tsepez@chromium.org> 1483366469 -0800
committer Commit bot <commit-bot@chromium.org> 1483366469 -0800

Use vector of unique_ptrs for page node children.

Also be sure that a loop terminates without relying on
specific behaviour of the callers.

Review-Url: https://codereview.chromium.org/2598473002