Illustrate MakeUnique<...>(NULL, ...) issue

Illustrate MakeUnique<...>(NULL, ...) issue

MakeUnique<Foo>(args) is expected to work the same as WrapUnique(new Foo(args))
except for visibility issues. In practice, it fails to compile when "args"
includes NULL.

BUG=

[Adam Rice, 2016-08-15 05:16:44]

The CQ bit was checked by ricea@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-15 05:16:58]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-15 05:21:48]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-08-15 05:21:49]

Dry run: Try jobs failed on following builders:
  cast_shell_linux on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/cast_shell_linu...)

[Adam Rice, 2016-08-29 07:03:02]

Description was changed from

==========
Illustrate MakeUnique<...>(NULL, ...) issue

MakeUnique<Foo>(args) is expected to work the same as WrapUnique(new Foo(args))
except for visibility issues. In practice, it fails to compile when "args"
includes NULL.

BUG=
==========

to

==========
Illustrate MakeUnique<...>(NULL, ...) issue

MakeUnique<Foo>(args) is expected to work the same as WrapUnique(new Foo(args))
except for visibility issues. In practice, it fails to compile when "args"
includes NULL.

BUG=
==========