ipa: ipa_interface: Add comment to defend the forward-declaration

Any struct that is defined in core.mojom with the skipHeader tag needs
to be present in ipa_interface.h, either forward-declared or #included.
Add a comment so that, in the future, people don't try to send patches
removing the seemingly unused forward-declaration.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

0 files changed, 0 insertions, 0 deletions