VM: Add missing source line info in await-for statements.

VM: Add missing source line info in await-for statements.

When an exception occurs in the constructor of the steam iterator, the
stack trace was missing the source position.

BUG=#24084
R=rmacnak@google.com

Committed: https://github.com/dart-lang/sdk/commit/12155b1920b19c0f6d743a841cbe3c36145f6046

[Florian Schneider, 2015-12-09 12:57:18]

Description was changed from

==========
VM: Add missing source line info in await-for statements.

BUG=#24084
==========

to

==========
VM: Add missing source line info in await-for statements.

When an exception occurs in the constructor of the steam iterator, the
stack trace was missing the source position.

BUG=#24084
==========

[Florian Schneider, 2015-12-09 12:57:39]

fschneider@google.com changed reviewers:
+ rmacnak@google.com

[rmacnak, 2015-12-10 17:20:14]

lgtm

[Florian Schneider, 2015-12-10 17:58:16]

Description was changed from

==========
VM: Add missing source line info in await-for statements.

When an exception occurs in the constructor of the steam iterator, the
stack trace was missing the source position.

BUG=#24084
==========

to

==========
VM: Add missing source line info in await-for statements.

When an exception occurs in the constructor of the steam iterator, the
stack trace was missing the source position.

BUG=#24084
R=rmacnak@google.com

Committed:
https://github.com/dart-lang/sdk/commit/12155b1920b19c0f6d743a841cbe3c36145f6046
==========

[Florian Schneider, 2015-12-10 17:58:17]

Committed patchset #2 (id:20001) manually as
12155b1920b19c0f6d743a841cbe3c36145f6046 (presubmit successful).