Add constructors to signatures

Add constructors to signatures.

This adds the types of constructors onto class signatures and makes them available via an exported function in the dart runtime.

BUG=
R=vsm@google.com

Committed: https://github.com/dart-lang/dev_compiler/commit/609c371d0923be1f854ddd2d0e325db6146f778f

[Leaf, 2015-05-21 20:29:00]

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

[vsm, 2015-05-21 21:21:17]

lgtm but there appears to be an (existing) error on named params

https://codereview.chromium.org/1152583002/diff/1/lib/runtime/dart/core.js
File lib/runtime/dart/core.js (right):

https://codereview.chromium.org/1152583002/diff/1/lib/runtime/dart/core.js#ne...
lib/runtime/dart/core.js:593: Duration: [Duration, [], {ay: int, our: int,
inute: int, econd: int, illisecond: int, icrosecond: int}],
Looks like the param names are getting cut off.

https://codereview.chromium.org/1152583002/diff/1/lib/runtime/dart/core.js#ne...
lib/runtime/dart/core.js:1276: statics: () => ({parse: [int, [String], {adi:
int, nErro: dart.functionType(int, [String])}]}),
Looks like this bug is from an earlier CL - "nErro" should onError.

[Leaf, 2015-05-21 21:35:19]

https://codereview.chromium.org/1152583002/diff/1/lib/runtime/dart/core.js
File lib/runtime/dart/core.js (right):

https://codereview.chromium.org/1152583002/diff/1/lib/runtime/dart/core.js#ne...
lib/runtime/dart/core.js:593: Duration: [Duration, [], {ay: int, our: int,
inute: int, econd: int, illisecond: int, icrosecond: int}],
On 2015/05/21 21:21:17, vsm wrote:
> Looks like the param names are getting cut off.

Yes, I'm looking into this.  I'll either add a fix to this CL or send it as a
separate CL if I don't get a fix shortly.

https://codereview.chromium.org/1152583002/diff/1/lib/runtime/dart/core.js#ne...
lib/runtime/dart/core.js:1276: statics: () => ({parse: [int, [String], {adi:
int, nErro: dart.functionType(int, [String])}]}),
On 2015/05/21 21:21:17, vsm wrote:
> Looks like this bug is from an earlier CL - "nErro" should onError.

Acknowledged.

[Leaf, 2015-05-21 21:49:15]

Committed patchset #1 (id:1) manually as
609c371d0923be1f854ddd2d0e325db6146f778f (presubmit successful).