Fix handling default parameters

Reviewers=vsm,leafp

Fixed emitting problems with default/optional.

R=leafp@google.com, vsm@google.com

Committed: https://code.google.com/p/dart/source/detail?r=40054

[terry, 2014-09-09 20:37:14]

terry@google.com changed reviewers:
+ leafp@google.com, vsm@google.com

[terry, 2014-09-09 20:37:15]

[Default=xxxxx] was not handled properly.

Latest IDL parser for argument defaults uses this syntax

         DOMString arg = null

old syntax was:

         [Default=NullString] DOMString arg

Also, consolidated handling of [Default=Undefined] to use same default_value
model.

Also, fixed a couple of extended attribute name changes that weren't change in
the Python files.

[Leaf, 2014-09-09 20:47:29]

lgtm with one comment.

https://codereview.chromium.org/551713003/diff/20001/tools/dom/idl/dart/dart.idl
File tools/dom/idl/dart/dart.idl (right):

https://codereview.chromium.org/551713003/diff/20001/tools/dom/idl/dart/dart....
tools/dom/idl/dart/dart.idl:257: interface VoidCallback {
This interface is marked callback in the idl, I wonder if we can get rid of it
from here now?

[vsm, 2014-09-09 20:48:02]

lgtm

[terry, 2014-09-09 20:58:35]

https://codereview.chromium.org/551713003/diff/20001/tools/dom/idl/dart/dart.idl
File tools/dom/idl/dart/dart.idl (right):

https://codereview.chromium.org/551713003/diff/20001/tools/dom/idl/dart/dart....
tools/dom/idl/dart/dart.idl:257: interface VoidCallback {
Good idea I'll look at that post checkin and change if its not required.

On 2014/09/09 20:47:28, leafp wrote:
> This interface is marked callback in the idl, I wonder if we can get rid of it
> from here now?

[terry, 2014-09-09 20:59:19]

Committed patchset #2 (id:20001) manually as 40054 (presubmit successful).