Mojo: Move public C system header files to mojo/public/c/system/.

Mojo: Move public C system header files to mojo/public/c/system/.

(macros.h is a bit strange, since it contains C++ macros as well. We may
want to split this file.)

R=darin@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=259742

[darin (slow to review), 2014-03-26 18:07:19]

LGTM

https://codereview.chromium.org/213393002/diff/1/mojo/public/c/system/macros.h
File mojo/public/c/system/macros.h (right):

https://codereview.chromium.org/213393002/diff/1/mojo/public/c/system/macros....
mojo/public/c/system/macros.h:31: #ifdef __cplusplus
I guess we can just have a cpp/system/macros_cpp.h?

[viettrungluu, 2014-03-26 18:18:31]

On 2014/03/26 18:07:19, darin wrote:
> LGTM
> 
> https://codereview.chromium.org/213393002/diff/1/mojo/public/c/system/macros.h
> File mojo/public/c/system/macros.h (right):
> 
>
https://codereview.chromium.org/213393002/diff/1/mojo/public/c/system/macros....
> mojo/public/c/system/macros.h:31: #ifdef __cplusplus
> I guess we can just have a cpp/system/macros_cpp.h?

Yeah, I'll do that separately.

(Since core.h does do some special things for C++, including a compile-assert,
separating the C++ macros is slightly more involved.)

Separate question: Would it make sense to rename core_cpp.h to
cpp/system/core.h, or would that be too confusing? (Similarly,
cpp/system/macros.h instead of macros_cpp.h?)

[viettrungluu, 2014-03-26 19:24:08]

The CQ bit was checked by viettrungluu@chromium.org

[commit-bot: I haz the power, 2014-03-26 19:24:14]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/viettrungluu@chromium.org/213393002/20001

[commit-bot: I haz the power, 2014-03-26 23:52:13]

Change committed as 259742