Refactor lexical home object binding

Refactor lexical home object binding

Before this we had 3 super related lexical bindings that got injected
into method bodies: .home_object, .this_function,  and new.target.
With this change we get rid of the .home_object one in favor of using
.this_function[home_object_symbol] which allows some simplifications
throughout the code base.

BUG=v8:3768
LOG=N
R=adamk@chromium.org, wingo@igalia.com

Committed: https://crrev.com/345fa142a9fca4b468417350ac26f61101d626e8
Cr-Commit-Position: refs/heads/master@{#28802}

[arv (Not doing code reviews), 2015-06-03 21:35:03]

arv@chromium.org changed reviewers:
+ wingo@igalia.com

[arv (Not doing code reviews), 2015-06-03 21:35:04]

PTAL

[adamk, 2015-06-03 22:39:12]

Looks fine except for what's going on in ast-value-factory. I don't recall the
decision around adding NewSymbol("some_string"). Was there a reason not to add
new AstValue::Type values?

https://codereview.chromium.org/1154103005/diff/1/src/ast-value-factory.cc
File src/ast-value-factory.cc (right):

https://codereview.chromium.org/1154103005/diff/1/src/ast-value-factory.cc#ne...
src/ast-value-factory.cc:170: if (symbol_name_[0] == 'i') {
This is not going to scale well, I wonder if we should just have two
AstValue::Type enums (ITERATOR_SYMBOL and HOME_OBJECT_SYMBOL).

[adamk, 2015-06-03 22:40:53]

I should say this lgtm as-is, if we decide to do something different in
AstValueFactory that can easily be done in a followup.

[arv (Not doing code reviews), 2015-06-03 23:17:27]

The CQ bit was checked by arv@chromium.org

[commit-bot: I haz the power, 2015-06-03 23:17:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1154103005/1

[commit-bot: I haz the power, 2015-06-03 23:19:26]

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

[commit-bot: I haz the power, 2015-06-03 23:19:27]

Try jobs failed on following builders:
  v8_linux64_avx2_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_avx2_rel/builds/...)

[arv (Not doing code reviews), 2015-06-04 15:25:06]

git rebase

[arv (Not doing code reviews), 2015-06-04 15:46:14]

The CQ bit was checked by arv@chromium.org

[arv (Not doing code reviews), 2015-06-04 15:46:15]

The patchset sent to the CQ was uploaded after l-g-t-m from adamk@chromium.org
Link to the patchset: https://codereview.chromium.org/1154103005/#ps20001
(title: "git rebase")

[commit-bot: I haz the power, 2015-06-04 15:46:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1154103005/20001

[commit-bot: I haz the power, 2015-06-04 16:22:34]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-06-04 16:22:54]

Patchset 2 (id:??) landed as
https://crrev.com/345fa142a9fca4b468417350ac26f61101d626e8
Cr-Commit-Position: refs/heads/master@{#28802}