Chromium 28.0.1500.52 finally is stable, so the release channels are now:
stable: 28.0.1500.52 (builds fine, tested)
beta: 28.0.1500.52 (same as stable)
dev: 29.0.1541.2 (patch rebased, builds fine, tested)
The user namespace patch doesn't apply for version 29, so I had to rebase it
against the current trunk (revision 207742).
And as version 27 is outdated, we no longer need to distinguish versions for
patching the hardcoded gcc path in core/core.gypi.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>