pkg/json: deprecate encoding APIs - encourage usage of dart:convert instead

pkg/json/test/json_test.dart

Index: pkg/json/test/json_test.dart
diff --git a/pkg/json/test/json_test.dart b/pkg/json/test/json_test.dart
index c3aaf7028b89d3d1bd81a2c10efd17bf1def1580..e61d4cd105a405c20b50629b0a3d7c49eca3bd8b 100644
--- a/pkg/json/test/json_test.dart
+++ b/pkg/json/test/json_test.dart
@@ -81,9 +81,8 @@ main() {
     expect(json.stringify(null), equals('null'));
     expect(json.stringify(' hi there" bob '), equals('" hi there\\" bob "'));
     expect(json.stringify('hi\\there'), equals('"hi\\\\there"'));
-    // TODO(devoncarew): these tests break the dartium build
-    //expect(json.stringify('hi\nthere'), equals('"hi\\nthere"'));
-    //expect(json.stringify('hi\r\nthere'), equals('"hi\\r\\nthere"'));
+    expect(json.stringify('hi\nthere'), equals('"hi\\nthere"'));
+    expect(json.stringify('hi\r\nthere'), equals('"hi\\r\\nthere"'));
     expect(json.stringify(''), equals('""'));
 
     // Lists.
@@ -163,6 +162,14 @@ main() {
     a.add(b);
     expect(() => json.stringify(a), throwsJsonError);
   });
+
+  test('print on', () {
+    var obj = { 'a': 'a', 'b': 2, 'c': [1,2,3]};
+    var output = json.stringify(obj);
+    var sb = new StringBuffer();
+    json.printOn(obj, sb);
+    expect(sb.toString(), output);
+  });
 }
 
 class TestClass {