Add chrome_public_apk and chrome_public_test_apk targets in GN.

Add chrome_public_apk and chrome_public_test_apk targets in GN.

The new targets for mass-upstreaming were only added in Gyp. This brings
parity to GN.
BUG=484934
Committed: https://crrev.com/c1995be807fd95a833d93eef029a8642782b0d6e
Cr-Commit-Position: refs/heads/master@{#332005}

[Yaron, 2015-05-28 01:35:55]

yfriedman@chromium.org changed reviewers:
+ cjhopman@chromium.org

[Yaron, 2015-05-28 01:35:56]

I tried defining a common template for this and the internal chrome_apk target
but seemed to be hitting crbug/395883

I think it works currently because the template is used in the same file that
instantiates it.

[cjhopman, 2015-05-28 19:21:56]

lgtm

[Yaron, 2015-05-28 20:15:16]

yfriedman@chromium.org changed reviewers:
+ dpranke@chromium.org

[Yaron, 2015-05-28 20:15:16]

dpranke: BUILD.gn

[Dirk Pranke, 2015-05-28 20:18:58]

lgtm

[Yaron, 2015-05-28 20:19:23]

The CQ bit was checked by yfriedman@chromium.org

[commit-bot: I haz the power, 2015-05-28 20:20:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1156363002/20001

[commit-bot: I haz the power, 2015-05-28 20:25:27]

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

[commit-bot: I haz the power, 2015-05-28 20:25:28]

Try jobs failed on following builders:
  linux_chromium_compile_dbg_32_ng on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  ios_dbg_simulator_ninja on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)
  mac_chromium_compile_dbg_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)
  mac_chromium_rel_ng on tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)

[Yaron, 2015-05-29 14:41:58]

The CQ bit was checked by yfriedman@chromium.org

[Yaron, 2015-05-29 14:41:58]

The patchset sent to the CQ was uploaded after l-g-t-m from
cjhopman@chromium.org, dpranke@chromium.org
Link to the patchset: https://codereview.chromium.org/1156363002/#ps40001
(title: "~")

[commit-bot: I haz the power, 2015-05-29 14:42:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1156363002/40001

[commit-bot: I haz the power, 2015-05-29 15:44:43]

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

[commit-bot: I haz the power, 2015-05-29 15:44:44]

Try jobs failed on following builders:
  win_chromium_rel_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_rel_...)

[Yaron, 2015-05-29 15:59:56]

The CQ bit was checked by yfriedman@chromium.org

[Yaron, 2015-05-29 15:59:57]

The patchset sent to the CQ was uploaded after l-g-t-m from
cjhopman@chromium.org, dpranke@chromium.org
Link to the patchset: https://codereview.chromium.org/1156363002/#ps60001
(title: "rebase agagin")

[commit-bot: I haz the power, 2015-05-29 16:00:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1156363002/60001

[commit-bot: I haz the power, 2015-05-29 17:52:34]

Committed patchset #4 (id:60001)

[commit-bot: I haz the power, 2015-05-29 17:54:39]

Patchset 4 (id:??) landed as
https://crrev.com/c1995be807fd95a833d93eef029a8642782b0d6e
Cr-Commit-Position: refs/heads/master@{#332005}