remove redundant includes of common.gypi and unused repo (support)

Remove redundant includes of common.gypi and unused repo from DEPS

build/gyp_chromium forces include of build/common.gypi for all gyp files so
including it in other .gyp files is redundant. In the case of some properties,
it causes duplication in lists which causes problems.

One of these was in build/util/support/support.gyp which is still getting
synced, but apparently has been long deleted and removed (2011). But the DEPS
were never rolled to remove the whole repo the last unused file got removed
here http://codereview.chromium.org/6294009 apparently.

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=139259

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=139268

[scottmg, 2012-05-24 23:40:54]

(fyi, chrome_frame & cloud_print in case there's some odd chance this could
cause a problem)

[robertshield, 2012-05-24 23:54:06]

On 2012/05/24 23:40:54, scottmg wrote:
> (fyi, chrome_frame & cloud_print in case there's some odd chance this could
> cause a problem)

This looks fine to me assuming it passes the win trybots.

[Ryan Sleevi, 2012-05-25 00:00:35]

Syntactically LGTM, but please run it through trybots /and/ reach out to OWNERS
in those areas, as sometimes there tends to be a layer of infrastructure not on
the waterfall (yeah, helpful, I know...) that such changes can impact.

[Albert Bodenhamer, 2012-05-25 00:14:22]

LGTM

Please make sure you run WINDOWS trybots before you land this since the virtual
driver code ONLY builds there at the moment.

[scottmg, 2012-05-28 21:08:11]

(missed one gyp reference)

[commit-bot: I haz the power, 2012-05-28 21:14:47]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/scottmg@chromium.org/10447026/11001

[commit-bot: I haz the power, 2012-05-28 23:30:23]

Change committed as 139268