MIPS64: Fix 'Revert of Revert of [strong] Implement strong mode restrictions on property access'.

MIPS64: Fix 'Revert of Revert of [strong] Implement strong mode restrictions on property access'.

Port 41405c0470d5b30ec5d22665ed9430c46b33624f

TEST=mjsunit/strong/load-property-mutate-backing-store, mjsunit/call-stub
BUG=

Committed: https://crrev.com/74f97b0d2a4a5102c2817c95139e94ebae900377
Cr-Commit-Position: refs/heads/master@{#29156}

[balazs.kilvady, 2015-06-19 15:05:45]

balazs.kilvady@imgtec.com changed reviewers:
+ akos.palfi@imgtec.com, conradw@chromium.org, danno@chromium.org,
dusan.milosavljevic@imgtec.com, paul.lind@imgtec.com

[balazs.kilvady, 2015-06-19 15:07:42]

The CQ bit was checked by balazs.kilvady@imgtec.com to run a CQ dry run

[commit-bot: I haz the power, 2015-06-19 15:08:05]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1191333003/1

[conradw, 2015-06-19 15:12:22]

Ah, I missed this port. LGTM, although I'm not a committer.

[commit-bot: I haz the power, 2015-06-19 15:34:49]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-06-19 15:34:50]

Dry run: This issue passed the CQ dry run.

[paul.l..., 2015-06-19 16:07:40]

LGTM.

[balazs.kilvady, 2015-06-19 16:08:45]

The CQ bit was checked by balazs.kilvady@imgtec.com

[commit-bot: I haz the power, 2015-06-19 16:09:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1191333003/1

[commit-bot: I haz the power, 2015-06-19 16:10:38]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-19 16:10:56]

Patchset 1 (id:??) landed as
https://crrev.com/74f97b0d2a4a5102c2817c95139e94ebae900377
Cr-Commit-Position: refs/heads/master@{#29156}