Move ClearNonLiveReferences and friends into the gc.

Move ClearNonLiveReferences and friends into the gc.

BUG=
R=mstarzinger@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=22864

[Michael Starzinger, 2014-08-05 11:47:38]

LGTM with one nit.

https://codereview.chromium.org/440063002/diff/20001/src/heap/mark-compact.h
File src/heap/mark-compact.h (right):

https://codereview.chromium.org/440063002/diff/20001/src/heap/mark-compact.h#...
src/heap/mark-compact.h:814: void ClearNonLiveMapTransitions(Map* map);
nit: This actual implementation no longer check whether the transition path is
at a live->non-live hop. Hence I propse
s/ClearNonLiveMapTransitions/ClearMapTransitions/ to make that clearer and also
to avoid confusion with the name overloading here.

[Hannes Payer (out of office), 2014-08-05 11:52:50]

https://codereview.chromium.org/440063002/diff/20001/src/heap/mark-compact.h
File src/heap/mark-compact.h (right):

https://codereview.chromium.org/440063002/diff/20001/src/heap/mark-compact.h#...
src/heap/mark-compact.h:814: void ClearNonLiveMapTransitions(Map* map);
On 2014/08/05 11:47:38, Michael Starzinger wrote:
> nit: This actual implementation no longer check whether the transition path is
> at a live->non-live hop. Hence I propse
> s/ClearNonLiveMapTransitions/ClearMapTransitions/ to make that clearer and
also
> to avoid confusion with the name overloading here.

Done.

[Hannes Payer (out of office), 2014-08-05 11:58:31]

Committed patchset #3 manually as 22864 (presubmit successful).