[libaddressinput] Make build system pass gn check

There were some missing headers that gn check found in
third_party/ced instead (string_util.h is a common name) and
then complained that libaddressinput can't include files from
third_party/ced. This adds those headers and some more.

It doesn't add the public headers since those have no natural
position in the dependency tree (used externally, and by util).

Bug: 898837
Change-Id: Iec0d622c0da861d149f86267eebafa63221d3906
Reviewed-on: https://chromium-review.googlesource.com/c/1299000
Reviewed-by: Mathieu Perreault <mathp@chromium.org>
Commit-Queue: Daniel Bratell <bratell@opera.com>
Cr-Commit-Position: refs/heads/master@{#602712}
1 file changed