Recorded slots in store buffer are never in free space. Remove migration consistency check.

Recorded slots in store buffer are never in free space. Remove migration consistency check.

After establishing the invariant that the store buffer always has valid slots after marking, the store buffer integrity check is not needed anymore.

BUG=454157
LOG=n

Committed: https://crrev.com/ded6ffbb2ab636031ae1cd00f002886325426cec
Cr-Commit-Position: refs/heads/master@{#27073}

[Hannes Payer (out of office), 2015-03-09 12:15:02]

hpayer@chromium.org changed reviewers:
+ jarin@chromium.org

[Jarin, 2015-03-09 12:38:43]

lgtm. It's great to see this hack go...

[Hannes Payer (out of office), 2015-03-09 12:51:01]

The CQ bit was checked by hpayer@chromium.org

[Hannes Payer (out of office), 2015-03-09 12:51:01]

The patchset sent to the CQ was uploaded after l-g-t-m from jarin@chromium.org
Link to the patchset: https://codereview.chromium.org/990173002/#ps20001 (title:
" ")

[commit-bot: I haz the power, 2015-03-09 12:51:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/990173002/20001

[Hannes Payer (out of office), 2015-03-09 12:57:14]

The CQ bit was checked by hpayer@chromium.org

[Hannes Payer (out of office), 2015-03-09 12:57:14]

The patchset sent to the CQ was uploaded after l-g-t-m from jarin@chromium.org
Link to the patchset: https://codereview.chromium.org/990173002/#ps40001 (title:
" ")

[commit-bot: I haz the power, 2015-03-09 12:57:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/990173002/40001

[commit-bot: I haz the power, 2015-03-09 13:33:16]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-03-09 13:33:26]

Patchset 3 (id:??) landed as
https://crrev.com/ded6ffbb2ab636031ae1cd00f002886325426cec
Cr-Commit-Position: refs/heads/master@{#27073}