DeferredAutoreleasePool didn't work on Snow Leopard

DeferredAutoreleasePool didn't work on Snow Leopard.

This is a backout of r30647, but also resurrects the change from
http://codereview.chromium.org/341022 to work around the crash that r30647
solved much more elegantly.

We can't really leave things broken on 10.6, though.  I killed most of a
perfectly good Friday evening trying to figure out how to salvage r30647,
but the DeferredAutoreleasePool approach seems doomed without making private
calls.

This makes me really sad.

BUG=25857, 26399, 26402
TEST=Does it launch on Snow Leopard now?  Does it crash when you close windows?

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=30668

[Mark Mentovai, 2009-10-31 04:57:06]

Normally "doesn't launch on 10.6" would be cause for an immediate TBR backout,
but it's Friday night and I doubt anyone cares, so I'll give this until tomorrow
before checking in.

Let me know if you have any better ideas.  I wanted to avoid the backout and
instead come up with some sort of workaround, but at this point it seems like a
large chunk of this - the interesting and cool stuff - won't be usable on 10.6.

[Mark Mentovai, 2009-10-31 15:35:43]

I committed this backout TBR to not frustrate people who might want to develop
on 10.6 over the weekend.

[dmac, 2009-11-02 22:50:03]

On 2009/10/31 15:35:43, Mark Mentovai wrote:
> I committed this backout TBR to not frustrate people who might want to develop
> on 10.6 over the weekend.

LGTM... sigh.