
We ancitipate future changes where certain bridges will lack the support for client tag hashes. Hence, let's accomodate that in the bridge interface and update the processor to honor the new contract. Bug: 870624,881289 Change-Id: Ic871d7a9fd7cf9c9a989624e1691409aed400e39 Reviewed-on: https://chromium-review.googlesource.com/1249023 Commit-Queue: Mikel Astiz <mastiz@chromium.org> Reviewed-by: Florian Uunk <feuunk@chromium.org> Cr-Commit-Position: refs/heads/master@{#594885}