Enable await in for and for-in loops.

Enable await in for and for-in loops.

BUG=
R=srdjan@google.com

Committed: https://code.google.com/p/dart/source/detail?r=39880

[Michael Lippautz (Google), 2014-09-03 23:23:33]

mlippautz@google.com changed reviewers:
+ hausner@google.com, srdjan@google.com

[Michael Lippautz (Google), 2014-09-03 23:23:33]

PTAL

[hausner, 2014-09-04 16:30:58]

LGTMwC

https://codereview.chromium.org/538803002/diff/1/runtime/vm/parser.cc
File runtime/vm/parser.cc (right):

https://codereview.chromium.org/538803002/diff/1/runtime/vm/parser.cc#newcode...
runtime/vm/parser.cc:6070: if (preamble != NULL) {
I don't understand this. If preamble is not NULL, it must be a SequenceNode. Why
the call to NodeAsSequenceNode()?

https://codereview.chromium.org/538803002/diff/1/runtime/vm/parser.cc#newcode...
runtime/vm/parser.cc:8291: if (preamble != NULL) {
Ditto.

[Michael Lippautz (Google), 2014-09-04 17:07:38]

https://codereview.chromium.org/538803002/diff/1/runtime/vm/parser.cc
File runtime/vm/parser.cc (right):

https://codereview.chromium.org/538803002/diff/1/runtime/vm/parser.cc#newcode...
runtime/vm/parser.cc:6070: if (preamble != NULL) {
On 2014/09/04 16:30:58, hausner wrote:
> I don't understand this. If preamble is not NULL, it must be a SequenceNode.
Why
> the call to NodeAsSequenceNode()?

There's no need anymore as this was a leftover. Done.

https://codereview.chromium.org/538803002/diff/1/runtime/vm/parser.cc#newcode...
runtime/vm/parser.cc:8291: if (preamble != NULL) {
On 2014/09/04 16:30:58, hausner wrote:
> Ditto.

Done.

[srdjan, 2014-09-04 17:32:45]

lgtm

[Michael Lippautz (Google), 2014-09-04 17:42:44]

Committed patchset #3 (id:40001) manually as 39880 (presubmit successful).