libweave: Partially copy string_utils from libchromeos

To move dependency on libchromeos.

BUG=brillo:1257
TEST=`FEATURES=test emerge-gizmo libweave buffet

Change-Id: Ie9e4bb1a754373c26ed6497cdb3ab03df8a78d87
Reviewed-on: https://chromium-review.googlesource.com/293613
Reviewed-by: Vitaly Buka <vitalybuka@chromium.org>
Commit-Queue: Vitaly Buka <vitalybuka@chromium.org>
Tested-by: Vitaly Buka <vitalybuka@chromium.org>
21 files changed
tree: d011dcef575d83a7df7f89f6dd9ff467a78b1262
  1. libweave/