Disallow yield in default parameter initializers

Disallow yield in default parameter initializers

R=adamk@chromium.org
LOG=N
BUG=v8:4397
Committed: https://crrev.com/a9d24d3f61baaa170f71dd1ff2d5a5a154166b47
Cr-Commit-Position: refs/heads/master@{#30431}

[adamk, 2015-08-27 19:09:01]

lgtm

[wingo, 2015-08-28 08:00:33]

The CQ bit was checked by wingo@igalia.com

[wingo, 2015-08-28 08:00:33]

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/1320673007/#ps20001
(title: "Fix formatting")

[commit-bot: I haz the power, 2015-08-28 08:00:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1320673007/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1320673007/20001

[commit-bot: I haz the power, 2015-08-28 08:01:38]

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

[commit-bot: I haz the power, 2015-08-28 08:01:39]

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/...)

[wingo, 2015-08-28 08:17:37]

Rebased.  While looking at the diff I noticed a place I did a
ValidateFormalParameterInitializer(classifier, ok), but failed to make the early
return if *ok was false; fixed that.  Resubmitting.

[wingo, 2015-08-28 08:17:42]

The CQ bit was checked by wingo@igalia.com

[wingo, 2015-08-28 08:17:42]

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/1320673007/#ps40001
(title: "Rebase")

[commit-bot: I haz the power, 2015-08-28 08:17:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1320673007/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1320673007/40001

[commit-bot: I haz the power, 2015-08-28 08:44:24]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-08-28 08:44:42]

Patchset 3 (id:??) landed as
https://crrev.com/a9d24d3f61baaa170f71dd1ff2d5a5a154166b47
Cr-Commit-Position: refs/heads/master@{#30431}