Add FakeSecureMessageDelegateFactory class

Replace duplicate implementations with this centralized class.

Bug: 976745
Change-Id: Idb328759ee467b66e417d54d858d895dab3fd4d6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1666771
Auto-Submit: Josh Nohle <nohle@chromium.org>
Commit-Queue: Kyle Horimoto <khorimoto@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#670529}
5 files changed