support adding symlinks to zip files

Add symlinks as symlinks to zip files, not their target
in place of the symlink.

Review URL: https://codereview.chromium.org/1875663002

Cr-Commit-Position: refs/heads/master@{#386199}


CrOS-Libchrome-Original-Commit: a7da5525463f06dd692dfc4740b4aeb6ffc6f681
1 file changed
tree: 30f9e1d28b3a8c6388e026ee5131130902b325ac
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/