Start of adding enums for error codes

I started with CreateNode so that you can get a feel for how this
would look. I may need a couple of other error codes, but not many
more.

BUG=384437
TEST=covered by tests
R=ben@chromium.org

Review URL: https://codereview.chromium.org/383293002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282760 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: 952e716ebad541094404f2f5eaf5cd6df1397be6
5 files changed
tree: eb5cf47e748d2b6a23b9aba1d3a2f2dbd6e7c6b4
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/