Split targets with external dependencies out of mojo_public.gypi

Split targets with external dependencies out of mojo_public.gypi

The non-testing code in src/mojo/public should be buildable without
depending on anything outside of that directory. It's fine for test
code to depend on base/ and gtest/, though. Due to the way GYP works,
having targets for both production and test code in the same .gypi
file winds up trying to resolve the dependencies for both kinds of
targets, breaking the ability to build the public mojo code
hermetically.

Splitting the targets out will enable consumers of the mojo code to
build the public code standalone using GYP.

BUG=chromium:388412
TEST=build and run all mojo unittests

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=282699

[Chris Masone, 2014-07-10 22:19:49]

PTAL.

I tried the standard bots. Any more I should look at?

[qsr, 2014-07-11 12:01:15]

The java changed should not be needed: https://codereview.chromium.org/385113005

[Chris Masone, 2014-07-11 18:51:51]

On 2014/07/11 12:01:15, qsr wrote:
> The java changed should not be needed:
https://codereview.chromium.org/385113005

THanks! Updated to take that into account.

Dave, can you take a look now? This seems to be ready.

[DaveMoore, 2014-07-11 19:33:23]

lgtm

[Chris Masone, 2014-07-11 19:35:15]

The CQ bit was checked by cmasone@chromium.org

[commit-bot: I haz the power, 2014-07-11 19:36:52]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/cmasone@chromium.org/385603003/60001

[commit-bot: I haz the power, 2014-07-11 21:11:48]

Change committed as 282699