ES6: Add support for Set and Map clear method

ES6: Add support for Set and Map clear method

http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts, section
15.14.5.3 and 15.14.5.2

BUG=v8:2400
Committed: https://code.google.com/p/v8/source/detail?r=12909

[arv (Not doing code reviews), 2012-11-08 21:16:28]

https://codereview.chromium.org/11409002/diff/1/src/collection.js
File src/collection.js (right):

https://codereview.chromium.org/11409002/diff/1/src/collection.js#newcode106
src/collection.js:106: %SetInitialize(this);
I first added a %SetClear before I realized that it would do exactly the same as
%SetInitialize. It might be less confusing to have SetClear? WDYT?

[Michael Starzinger, 2012-11-09 08:56:12]

LGTM. I'll land that for you.

https://codereview.chromium.org/11409002/diff/1/src/collection.js
File src/collection.js (right):

https://codereview.chromium.org/11409002/diff/1/src/collection.js#newcode106
src/collection.js:106: %SetInitialize(this);
On 2012/11/08 21:16:28, arv wrote:
> I first added a %SetClear before I realized that it would do exactly the same
as
> %SetInitialize. It might be less confusing to have SetClear? WDYT?

That's fine, I prefer it the way it is as well. The less entry points into the
runtime the better. Should we start optimizing these entry points it's much
simpler that way.