GitLab

Remove usage of DISALLOW_COPY_AND_ASSIGN from mojo documentation.

styleguide/c++/c++-dos-and-donts.md:
'DISALLOW_COPY_AND_ASSIGN` is deprecated.  For
a non-copyable/movable type, delete the copy operations (the move
operations will be implicitly deleted); otherwise, declare either
copy operations, move operations, or both (a non-declared pair
will be implicitly deleted).  Always declare or delete both
construction and assignment, not just one (which can introduce
subtle bugs).

Change-Id: Iad752e093643a0f964056c1d4b6714cea724728f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2398069Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Johann Koenig <johannkoenig@google.com>
Cr-Commit-Position: refs/heads/master@{#805164}