[runtime] Fix effect of setting .prototype on generator functions.

[runtime] Fix effect of setting .prototype on generator functions.

When setting a generator function's  "prototype" property to a non-object, the
prototype of new generator instances should be %GeneratorPrototype%, not
%ObjectPrototype%.

R=verwaest@chromium.org
BUG=v8:5011
Committed: https://crrev.com/3560d9bd583e79c981ef30f2767167219ba91bce
Cr-Commit-Position: refs/heads/master@{#36313}

[Toon Verwaest, 2016-05-17 15:30:08]

Do we want a DCHECK that the intrinsicDefaultProto of the incoming function
matches one of those 2 objects? Otherwise LGTM

[neis, 2016-05-18 08:42:29]

The CQ bit was checked by neis@chromium.org

[commit-bot: I haz the power, 2016-05-18 08:42:37]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1982203003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1982203003/20001

[neis, 2016-05-18 08:43:33]

On 2016/05/17 15:30:08, Toon Verwaest wrote:
> Do we want a DCHECK that the intrinsicDefaultProto of the incoming function
> matches one of those 2 objects? Otherwise LGTM

Turns out there is no good way to check this.

[commit-bot: I haz the power, 2016-05-18 09:15:45]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-05-18 09:18:18]

Description was changed from

==========
[runtime] Fix effect of setting .prototype on generator functions.

When setting a generator function's  "prototype" property to a non-object, the
prototype of new generator instances should be %GeneratorPrototype%, not
%ObjectPrototype%.

R=verwaest@chromium.org
BUG=v8:5011
==========

to

==========
[runtime] Fix effect of setting .prototype on generator functions.

When setting a generator function's  "prototype" property to a non-object, the
prototype of new generator instances should be %GeneratorPrototype%, not
%ObjectPrototype%.

R=verwaest@chromium.org
BUG=v8:5011

Committed: https://crrev.com/3560d9bd583e79c981ef30f2767167219ba91bce
Cr-Commit-Position: refs/heads/master@{#36313}
==========

[commit-bot: I haz the power, 2016-05-18 09:18:19]

Patchset 2 (id:??) landed as
https://crrev.com/3560d9bd583e79c981ef30f2767167219ba91bce
Cr-Commit-Position: refs/heads/master@{#36313}