sandbox: add missing header files to the corresponding BUILD.gn file

https://docs.google.com/spreadsheets/d/15az3FMl-jAS0mx4E9XVSBVHVpmEzo-9EAGY0ywe7bZs/edit#gid=0

https://groups.google.com/a/chromium.org/d/topic/chromium-dev/1kK45mVemBc/discussion

BUG=661774
R=jorgelo@chromium.org

Review-Url: https://codereview.chromium.org/2776903002
Cr-Original-Commit-Position: refs/heads/master@{#459922}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 1d7984c26ef2f38926538725acd443f66a8a42e5
1 file changed
tree: 44361a0f4b01f4b781df57e2c5006f34639489ab
  1. linux/
  2. mac/
  3. win/
  4. BUILD.gn
  5. features.gni
  6. OWNERS
  7. sandbox_export.h