Add Cast() to Boolean

Add Cast() to Boolean

We should be able to cast a Value to Boolean when IsBoolean() is true.

Committed: https://crrev.com/8bdac106312c88e2f3059efa067ebbbfc7467360
Cr-Commit-Position: refs/heads/master@{#27124}

[bashi, 2015-03-10 05:35:40]

bashi@chromium.org changed reviewers:
+ dcarney@chromium.org

[bashi, 2015-03-10 05:35:41]

I need this to fix the compile error which occurred when I trying to use
As<Boolean>.
https://codereview.chromium.org/986573002/#msg8

Similarly, V8 doesn't provide Cast() for Int32 and Uint32. I assume that we
should use ToInt32() or ToUint32() even when IsInt32() (or IsUint32()) is true,
given that it seems there is no trivial way to implement
v8::internal::Object::isInt32().

[dcarney, 2015-03-10 08:05:57]

lgtm

On 2015/03/10 05:35:41, bashi1 wrote:
> I need this to fix the compile error which occurred when I trying to use
> As<Boolean>.
> https://codereview.chromium.org/986573002/#msg8

right, sorry i forgot this one was unimplemented

> Similarly, V8 doesn't provide Cast() for Int32 and Uint32. I assume that we
> should use ToInt32() or ToUint32() even when IsInt32() (or IsUint32()) is
true,
> given that it seems there is no trivial way to implement
> v8::internal::Object::isInt32().

that's correct,  Cast doesn't make sense for integer types, as js doesn't
provide them

[bashi, 2015-03-10 23:10:34]

The CQ bit was checked by bashi@chromium.org

[commit-bot: I haz the power, 2015-03-10 23:11:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/990943003/1

[commit-bot: I haz the power, 2015-03-10 23:40:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-10 23:40:32]

Patchset 1 (id:??) landed as
https://crrev.com/8bdac106312c88e2f3059efa067ebbbfc7467360
Cr-Commit-Position: refs/heads/master@{#27124}