This patch copies methods and classes from WireServer.cpp and
distributes them over multiple files. Headers and forward declarations
are added as necessary, but no functional changes are made.
Bug: dawn:88
Change-Id: I471b8c27804916257eff266a51d087ba1ddbfeb6
Reviewed-on: https://dawn-review.googlesource.com/c/4000
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
Austin Eng