Mojo: Add the beginnings of a proper embedder API.

Mojo: Add the beginnings of a proper embedder API.

Actually, just move mojo::system::CoreImpl::Init() to
mojo::embedder::Init(), in its own header file.

R=darin@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=244284

[viettrungluu, 2014-01-10 22:46:09]

WDYT?

Notes:
- I intend to add more embedder APIs, but I need a place to put them ...
- maybe embedder.h should be moved to a different directory, so that
dependencies can be enforced by DEPS
- maybe it should have a separate export macro

[darin (slow to review), 2014-01-10 22:48:54]

LGTM

https://codereview.chromium.org/135073002/diff/1/mojo/system/core_impl.h
File mojo/system/core_impl.h (right):

https://codereview.chromium.org/135073002/diff/1/mojo/system/core_impl.h#newc...
mojo/system/core_impl.h:88: friend void ::mojo::embedder::Init();
it doesn't work to just say "embedder::Init()" here?

[viettrungluu, 2014-01-11 00:30:37]

Thanks.

https://codereview.chromium.org/135073002/diff/1/mojo/system/core_impl.h
File mojo/system/core_impl.h (right):

https://codereview.chromium.org/135073002/diff/1/mojo/system/core_impl.h#newc...
mojo/system/core_impl.h:88: friend void ::mojo::embedder::Init();
On 2014/01/10 22:48:54, darin wrote:
> it doesn't work to just say "embedder::Init()" here?

Done.

[viettrungluu, 2014-01-11 00:31:30]

Committed patchset #2 manually as r244284 (presubmit successful).