Add parseJson to DartUtilities.

Add parseJson to DartUtilities and mark xhr_test/json as passing.

BUG=http://dartbug.com/13069
R=vsm@google.com

Committed: https://code.google.com/p/dart/source/detail?r=39158

[blois, 2014-08-02 00:16:30]

https://codereview.chromium.org/414193002/diff/20001/sdk/lib/html/dartium/htm...
File sdk/lib/html/dartium/html_dartium.dart (right):

https://codereview.chromium.org/414193002/diff/20001/sdk/lib/html/dartium/htm...
sdk/lib/html/dartium/html_dartium.dart:37534: +  static parseJson(String
jsonSource) => const JsonDecoder().convert(jsonSource);
Should this be modified in html_native_DOMImplementation.dart?

[vsm, 2014-08-04 14:34:42]

https://chromiumcodereview.appspot.com/414193002/diff/20001/sdk/lib/html/dart...
File sdk/lib/html/dartium/html_dartium.dart (right):

https://chromiumcodereview.appspot.com/414193002/diff/20001/sdk/lib/html/dart...
sdk/lib/html/dartium/html_dartium.dart:37534: +  static parseJson(String
jsonSource) => const JsonDecoder().convert(jsonSource);
On 2014/08/02 00:16:30, blois wrote:
> Should this be modified in html_native_DOMImplementation.dart?

Yes, html_dartium.dart is generated via script.

This change should probably go into
tools/dom/src/html_native_DOMImplementation.dart.  Edit there and run
tools/dom/scripts/go.sh.  That should include your change in this file.

If you have changes to dart2js code (you shouldn't for this), it should also get
tested in a regular enlistment.

[rmacnak, 2014-08-06 17:59:34]

Made the change in html_native_DOMImplementation.dart and ran dom/scripts/go.sh

[vsm, 2014-08-12 08:19:55]

lgtm

[rmacnak, 2014-08-12 18:44:06]

Committed patchset #4 manually as 39158 (presubmit successful).