Make sure to use the correct context for eval checks

Make sure to use the correct context for eval checks

We can't assume that there's no entered context during microtask
execution. We also can't assume that we'll never enter an context during
microtask execution either.

We can however assume that we don't execute microtasks recursively, so
remembering the length of the entered context stack is enough to decide
which context to use.

BUG=chromium:635769
R=verwaest@chromium.org

Committed: https://crrev.com/d008b9efcbddf299feefe7b420fd7e1601512ba5
Cr-Commit-Position: refs/heads/master@{#39627}

[jochen (gone - plz use gerrit), 2016-09-20 13:15:19]

The CQ bit was checked by jochen@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-20 13:15:25]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[jochen (gone - plz use gerrit), 2016-09-20 13:16:18]

The CQ bit was checked by jochen@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-20 13:16:25]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-20 13:44:15]

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

[commit-bot: I haz the power, 2016-09-20 13:44:16]

Dry run: This issue passed the CQ dry run.

[Toon Verwaest, 2016-09-22 13:02:02]

lgtm

[jochen (gone - plz use gerrit), 2016-09-22 13:03:56]

The CQ bit was checked by jochen@chromium.org

[commit-bot: I haz the power, 2016-09-22 13:04:01]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-22 13:38:43]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-09-22 13:38:54]

Description was changed from

==========
Make sure to use the correct context for eval checks

We can't assume that there's no entered context during microtask
execution. We also can't assume that we'll never enter an context during
microtask execution either.

We can however assume that we don't execute microtasks recursively, so
remembering the length of the entered context stack is enough to decide
which context to use.

BUG=chromium:635769
R=verwaest@chromium.org
==========

to

==========
Make sure to use the correct context for eval checks

We can't assume that there's no entered context during microtask
execution. We also can't assume that we'll never enter an context during
microtask execution either.

We can however assume that we don't execute microtasks recursively, so
remembering the length of the entered context stack is enough to decide
which context to use.

BUG=chromium:635769
R=verwaest@chromium.org

Committed: https://crrev.com/d008b9efcbddf299feefe7b420fd7e1601512ba5
Cr-Commit-Position: refs/heads/master@{#39627}
==========

[commit-bot: I haz the power, 2016-09-22 13:38:55]

Patchset 2 (id:??) landed as
https://crrev.com/d008b9efcbddf299feefe7b420fd7e1601512ba5
Cr-Commit-Position: refs/heads/master@{#39627}