Clean up remaining unused globals (on mac).

Clean up remaining unused globals (on mac).

Found by clang's new -Wunused-const-variable.

BUG=290204
R=akalin@chromium.org, jamesr@chromium.org, koz@chromium.org, piman@chromium.org, sergeyu@chromium.org, thestig@chromium.org, vitalybuka@chromium.org
TBR=cpu, dmichael, joi, xhwang

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=225281

[Nico, 2013-09-25 22:49:14]

Last (large) one!

koz: apps/
jamesr: cc/
thestig: chrome/
vitalybuka: cloud_print/
joi: components/, content/, google_apis/
piman: gpu/
sergeyu: jingle/, remoting/
xhwang: media/
akalin: net/, sync/
dmichael: ppapi/
cpu: third_party/

[Sergey Ulanov, 2013-09-25 23:00:18]

remoting and jingle - LGTM

[Lei Zhang, 2013-09-25 23:05:09]

chrome/ lgtm

[Vitaly Buka (NO REVIEWS), 2013-09-25 23:07:06]

lgtm

[jamesr, 2013-09-25 23:13:47]

lgtm

[akalin, 2013-09-25 23:13:53]

net and sync lgtm

[piman, 2013-09-25 23:41:09]

gpu LGTM

[koz (OOO until 15th September), 2013-09-26 00:02:45]

chrome/browser/extensions lgtm

[Nico, 2013-09-26 00:06:52]

Committed patchset #3 manually as r225281 (presubmit successful).

[dmichael (off chromium), 2013-09-26 02:18:16]

late to the game, but ppapi lgtm

[Jói, 2013-09-26 10:08:27]

LGTM, but note I am not an OWNER for //content/browser.

[piman, 2013-09-26 17:11:46]

content/browser LGTM.