This is in preparation of referencing this type from the code
generated by third_party/inspector_protocol/code_generator.py.
v8 will not use protocol::Binary, that is, the .pdl file for
v8 won't have binary fields. Therefore, we need not provide
an implementation for this type.

My overall WIP change is in here, and happy to explain more:
https://chromium-review.googlesource.com/c/chromium/src/+/1244719

Bug: chromium:891377
Cq-Include-Trybots: luci.chromium.try:linux_chromium_headless_rel;master.tryserver.blink:linux_trusty_blink_rel
Change-Id: I7336be5f6a60e6ad143290eca09dea59ff4b56a8
Reviewed-on: https://chromium-review.googlesource.com/c/1277714Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Johannes Henkel <johannes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56658}