Fix broken iOS skia test and make sure it is compiled

Fix broken iOS skia test and make sure it is compiled.

The include was broken by https://codereview.chromium.org/832053004
and has gone completely unnoticed as the tests were not build on iOS.

This CL fixes the test and adds skia_unittest to the list of targets build on
iOS.

BUG=447659
Committed: https://crrev.com/2866310ac0eee3bfe698b72a4642c8ebf1fab107
Cr-Commit-Position: refs/heads/master@{#312177}

[noyau (Ping after 24h), 2015-01-14 17:42:23]

Patchset #2 (id:20001) has been deleted

[noyau (Ping after 24h), 2015-01-14 17:44:15]

noyau@chromium.org changed reviewers:
+ thakis@chromium.org

[noyau (Ping after 24h), 2015-01-14 17:44:15]

To thakis for review (you are the only owner of both build/ and skia/)

[noyau (Ping after 24h), 2015-01-19 10:07:53]

On 2015/01/14 17:44:15, noyau wrote:
> To thakis for review (you are the only owner of both build/ and skia/)

Ping?

[Nico, 2015-01-19 18:08:32]

lgtm

Sorry, I have no idea why I missed this.

[noyau (Ping after 24h), 2015-01-20 09:14:34]

The CQ bit was checked by noyau@chromium.org

[commit-bot: I haz the power, 2015-01-20 09:15:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/836023006/40001

[commit-bot: I haz the power, 2015-01-20 09:18:08]

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

[commit-bot: I haz the power, 2015-01-20 09:18:09]

Try jobs failed on following builders:
  ios_dbg_simulator on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)
  ios_rel_device_ng on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ng...)
  ios_rel_device_ninja_ng on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ni...)

Try jobs failed on following builders:
  ios_dbg_simulator on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)
  ios_rel_device_ng on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ng...)
  ios_rel_device_ninja_ng on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ni...)
  mac_chromium_rel_ng on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_...)
  win8_chromium_rel on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win8_chromium_rel...)

[noyau (Ping after 24h), 2015-01-20 09:42:27]

The CQ bit was checked by noyau@chromium.org

[commit-bot: I haz the power, 2015-01-20 09:42:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/836023006/60001

[commit-bot: I haz the power, 2015-01-20 10:53:01]

Committed patchset #3 (id:60001)

[commit-bot: I haz the power, 2015-01-20 10:53:51]

Patchset 3 (id:??) landed as
https://crrev.com/2866310ac0eee3bfe698b72a4642c8ebf1fab107
Cr-Commit-Position: refs/heads/master@{#312177}