Update the context if Set on slow-mode argument targets an aliased arguments entry

Update the context if Set on slow-mode argument targets an aliased arguments entry

BUG=v8:4177
LOG=n

Committed: https://crrev.com/377ea534703c5c9bffd407bd8d6d22177bba225f
Cr-Commit-Position: refs/heads/master@{#29575}

[Toon Verwaest, 2015-07-10 13:45:22]

verwaest@chromium.org changed reviewers:
+ ishell@chromium.org

[Toon Verwaest, 2015-07-10 13:45:23]

ptal

[Igor Sheludko, 2015-07-10 13:51:51]

lgtm

[Toon Verwaest, 2015-07-10 13:53:19]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2015-07-10 13:53:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1233493007/1

[Toon Verwaest, 2015-07-10 13:53:36]

The CQ bit was unchecked by verwaest@chromium.org

[Toon Verwaest, 2015-07-10 15:11:23]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2015-07-10 15:11:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1233493007/1

[commit-bot: I haz the power, 2015-07-10 15:52:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-10 15:52:20]

Patchset 1 (id:??) landed as
https://crrev.com/377ea534703c5c9bffd407bd8d6d22177bba225f
Cr-Commit-Position: refs/heads/master@{#29575}

[arv (Not doing code reviews), 2015-07-10 15:54:47]

arv@chromium.org changed reviewers:
+ arv@chromium.org

[arv (Not doing code reviews), 2015-07-10 15:54:48]

LGTM

https://codereview.chromium.org/1233493007/diff/1/test/test262-es6/test262-es...
File test/test262-es6/test262-es6.status (left):

https://codereview.chromium.org/1233493007/diff/1/test/test262-es6/test262-es...
test/test262-es6/test262-es6.status:508: #
https://code.google.com/p/v8/issues/detail?id=4177
Woot!