Revert 259371 "clang roll 198389:202554 reloaded"

Revert 259371 "clang roll 198389:202554 reloaded"

Even though the libc++ dependency is gone, clang still depends on
/usr/lib/libedit.3.dylib suddently, which doesn't exist on 10.6. Backing out
while I investigate...

> clang roll 198389:202554 reloaded
> 
> The first try is at https://codereview.chromium.org/195623002/ . Patch set 1
> is identical to that CL, patch set 2 has what changed.
> 
> The big change is that clang/mac is built in gnu++98 mode and doesn't link
> to libc++, to buy us time until the next roll for upgrading our bots to 10.7.
> This includes blink plugin changes up to r256229 (inclusive).
> 
> BUG=351479, 287029, 341352, 333968, 335325
> R=hans@chromium.org
> TBR=hans@chromium.org
> 
> Review URL: https://codereview.chromium.org/211213004

TBR=thakis@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=259378

[Nico, 2014-03-25 22:56:21]

Committed patchset #1 manually as r259378 (tree was closed).