"publishTo" -> "publish_to".

sdk/lib/_internal/pub/test/pubspec_test.dart

Index: sdk/lib/_internal/pub/test/pubspec_test.dart
diff --git a/sdk/lib/_internal/pub/test/pubspec_test.dart b/sdk/lib/_internal/pub/test/pubspec_test.dart
index 41e6d7c935bedcbe70086aa75b24ecdbb6a2206b..e34ce431c0d2dca1bc1c859c4d3f1d7fe5b1fd4c 100644
--- a/sdk/lib/_internal/pub/test/pubspec_test.dart
+++ b/sdk/lib/_internal/pub/test/pubspec_test.dart
@@ -421,26 +421,26 @@ environment:
       });
 
       test("throws if not a string", () {
-        expectPubspecException('publishTo: 123',
+        expectPubspecException('publish_to: 123',
             (pubspec) => pubspec.publishTo);
       });
 
       test("allows a URL", () {
         var pubspec = new Pubspec.parse('''
-publishTo: http://example.com
+publish_to: http://example.com
 ''', sources);
         expect(pubspec.publishTo, equals("http://example.com"));
       });
 
       test("allows none", () {
         var pubspec = new Pubspec.parse('''
-publishTo: none
+publish_to: none
 ''', sources);
         expect(pubspec.publishTo, equals("none"));
       });
 
       test("throws on other strings", () {
-        expectPubspecException('publishTo: http://bad.url:not-port',
+        expectPubspecException('publish_to: http://bad.url:not-port',
             (pubspec) => pubspec.publishTo);
       });
     });