Split out mojo_converters into its own target.

Split out mojo_converters into its own target.

The mojo_surface_converters get their own file to avoid dependency
cycles between media/ and cc/

BUG=none
TEST=no more cycles when media depends on type conveters.

Committed: https://crrev.com/6cdbabebc60c42a496af70fa7a6792454d05ecb9
Cr-Commit-Position: refs/heads/master@{#302367}

[DaleCurtis, 2014-10-31 20:29:15]

Patchset #1 (id:1) has been deleted

[DaleCurtis, 2014-10-31 20:30:46]

dalecurtis@chromium.org changed reviewers:
+ jamesr@chromium.org

[jamesr, 2014-10-31 23:34:08]

Rather than having mojo_converters.gyp which has input_event and geometry
converters and mojo_surfaces_converters.gyp, can we have a separate .gyp for
each converter?  Having 2 converter libs in one gyp and a third converter lib in
another gyp file doesn't make a ton of sense.

[DaleCurtis, 2014-10-31 23:59:11]

Patchset #2 (id:40001) has been deleted

[DaleCurtis, 2014-10-31 23:59:50]

Done.

[jamesr, 2014-11-01 00:05:30]

lgtm

[DaleCurtis, 2014-11-01 00:06:02]

The CQ bit was checked by dalecurtis@chromium.org

[commit-bot: I haz the power, 2014-11-01 00:07:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/691573003/60001

[commit-bot: I haz the power, 2014-11-01 00:49:42]

Committed patchset #2 (id:60001)

[commit-bot: I haz the power, 2014-11-01 00:50:19]

Patchset 2 (id:??) landed as
https://crrev.com/6cdbabebc60c42a496af70fa7a6792454d05ecb9
Cr-Commit-Position: refs/heads/master@{#302367}