Read Intl.message examples argument as a map, not a string

Read Intl.message examples argument as a map, not a string

BUG=
R=efortuna@google.com

Committed: https://code.google.com/p/dart/source/detail?r=31749

[Alan Knight, 2014-01-10 00:49:47]

Which we do by reading it as JSON, which restricts what you can do in the
string, but otherwise it seemed like writing a Dart parser or building up the
actual Map out of the analyzer's data structures, neither of which was
appealing.

[Emily Fortuna, 2014-01-10 01:40:56]

lgtm

https://codereview.chromium.org/132963002/diff/1/pkg/intl/lib/intl.dart
File pkg/intl/lib/intl.dart (right):

https://codereview.chromium.org/132963002/diff/1/pkg/intl/lib/intl.dart#newco...
pkg/intl/lib/intl.dart:132: * Returns a message that can be internationalized.
It is expected
while you're changing this comment, let's make it follow the "comment style
guide". First sentence should be its own "paragraph" and then separate a newline
and then the other sentences.

[Alan Knight, 2014-01-10 23:57:06]

Did this entirely differently so JSON is no longer required. Please take
(another) look.

[Emily Fortuna, 2014-01-11 00:07:56]

lgtm

[Alan Knight, 2014-01-13 17:58:51]

Committed patchset #4 manually as r31749 (presubmit successful).