Extract convert_dict target from chrome.gyp.

Extract convert_dict target from chrome.gyp.

The gyp files under chrome/ are really not well organized, kind of a mess,
so it is hard to find the right places to put things. As most of the things goes
into browser, browser_ui or common libraries, this isn't much an issue though.
But we can do better.

BUG=None
TEST=build/gyp_chromium chrome/tools/convert_dict/convert_dict.gyp
ninja -C out/Debug convert_dict
R=thestig@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=232584

[tfarina, 2013-11-01 00:15:57]

Hi Lei, could you review this to me?

Thanks,

[tfarina, 2013-11-01 21:55:56]

ping??

[Lei Zhang, 2013-11-01 22:44:32]

lgtm (was AFK yesterday -> lots of stuff to do today)

[commit-bot: I haz the power, 2013-11-01 23:11:49]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/tfarina@chromium.org/48623008/1

[commit-bot: I haz the power, 2013-11-02 02:11:29]

Retried try job too often on win_rel for step(s) content_unittests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[commit-bot: I haz the power, 2013-11-02 02:28:33]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/tfarina@chromium.org/48623008/1

[commit-bot: I haz the power, 2013-11-02 05:20:31]

Change committed as 232584