Implement V8 extras utils object

Implement V8 extras utils object

This adds a utils object meant specifically for V8 extras, presenting a limited
API surface for doing things that would otherwise require %-functions.

BUG=v8:4276
LOG=Y
R=jochen@chromium.org,yangguo@chromium.org

Committed: https://crrev.com/d346834fdc39da0588cd26fed7fa8d53c321032f
Cr-Commit-Position: refs/heads/master@{#30773}

[domenic, 2015-09-15 19:20:54]

If this looks good, I can work on a subsequent patch to disable %-function
access in extras.

[jochen (gone - plz use gerrit), 2015-09-16 11:24:08]

looks good, but really, we should wait for Yang

[domenic, 2015-09-16 14:29:37]

domenic@chromium.org changed reviewers:
+ jkummerow@chromium.org

[domenic, 2015-09-16 14:29:37]

jkummerow@, Jochen suggested you might be a good reviewer in lieu of Yang since
he's out for the next month?

[Yang, 2015-09-16 18:41:34]

https://codereview.chromium.org/1343113003/diff/20001/src/prologue.js
File src/prologue.js (right):

https://codereview.chromium.org/1343113003/diff/20001/src/prologue.js#newcode302
src/prologue.js:302: return %Apply(func, thisArg, arguments, 2, arguments.length
- 2);
%Apply should not be any faster than Function.prototype.apply iirc. So I'm not
sure exposing this here makes any sense. I would favor the alternative where the
extras code would grab Function.prototype.apply on initialization and use it. Is
there any downside to that alternative?

[domenic, 2015-09-16 18:48:17]

On 2015/09/16 at 18:41:34, yangguo wrote:
> https://codereview.chromium.org/1343113003/diff/20001/src/prologue.js
> File src/prologue.js (right):
> 
>
https://codereview.chromium.org/1343113003/diff/20001/src/prologue.js#newcode302
> src/prologue.js:302: return %Apply(func, thisArg, arguments, 2,
arguments.length - 2);
> %Apply should not be any faster than Function.prototype.apply iirc. So I'm not
sure exposing this here makes any sense. I would favor the alternative where the
extras code would grab Function.prototype.apply on initialization and use it. Is
there any downside to that alternative?

You're right, the extra utilities I provided here may have been going overboard.
We can omit call and apply probably and just have people use
uncurryThis(global.Function.prototype.{apply,call}).

[domenic, 2015-09-16 19:55:28]

On 2015/09/16 at 18:48:17, domenic wrote:

> You're right, the extra utilities I provided here may have been going
overboard. We can omit call and apply probably and just have people use
uncurryThis(global.Function.prototype.{apply,call}).

Pushed new revision without those

[Yang, 2015-09-16 20:04:57]

On 2015/09/16 19:55:28, domenic wrote:
> On 2015/09/16 at 18:48:17, domenic wrote:
> 
> > You're right, the extra utilities I provided here may have been going
> overboard. We can omit call and apply probably and just have people use
> uncurryThis(global.Function.prototype.{apply,call}).
> 
> Pushed new revision without those

lgtm.

[domenic, 2015-09-16 20:16:30]

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

[commit-bot: I haz the power, 2015-09-16 20:16:42]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1343113003/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1343113003/40001

[commit-bot: I haz the power, 2015-09-16 20:42:40]

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

[commit-bot: I haz the power, 2015-09-16 20:42:40]

Dry run: This issue passed the CQ dry run.

[domenic, 2015-09-16 20:59:00]

The CQ bit was checked by domenic@chromium.org

[commit-bot: I haz the power, 2015-09-16 20:59:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1343113003/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1343113003/40001

[commit-bot: I haz the power, 2015-09-16 21:00:52]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-09-16 21:01:05]

Patchset 3 (id:??) landed as
https://crrev.com/d346834fdc39da0588cd26fed7fa8d53c321032f
Cr-Commit-Position: refs/heads/master@{#30773}