mac: Delete some pre-10.5 code.

mac: Delete some pre-10.5 code.

BUG=none

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=150171

[Mark Mentovai, 2012-08-06 04:13:41]

LGTM

This was added because someone needed to build this code for 10.4, but I don’t
remember who and it was a year or two ago. If they need to add it back, we’ll
revisit it in the future.

[commit-bot: I haz the power, 2012-08-06 07:19:56]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/thakis@chromium.org/10827175/1

[commit-bot: I haz the power, 2012-08-06 09:31:36]

Try job failure for 10827175-1 (retry) on win_rel for step "browser_tests".
It's a second try, previously, step "browser_tests" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[commit-bot: I haz the power, 2012-08-06 21:59:25]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/thakis@chromium.org/10827175/1

[commit-bot: I haz the power, 2012-08-06 22:39:04]

Try job failure for 10827175-1 (retry) on linux_chromeos for step "compile"
(clobber build).
It's a second try, previously, step "compile" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_chro...

[commit-bot: I haz the power, 2012-08-06 22:42:35]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/thakis@chromium.org/10827175/1

[commit-bot: I haz the power, 2012-08-06 23:14:49]

Try job failure for 10827175-1 (retry) on linux_chromeos for step "compile"
(clobber build).
It's a second try, previously, step "compile" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_chro...