Dart: Fix conversion of identifiers to lowerCamelCase.

mojo/dart/embedder/io/internet_address_patch.dart

Index: mojo/dart/embedder/io/internet_address_patch.dart
diff --git a/mojo/dart/embedder/io/internet_address_patch.dart b/mojo/dart/embedder/io/internet_address_patch.dart
index 527bb28aa9286f53e719476bf64bbb6d0fad5f69..3723bbc6c1d19e659fe2d4995569ae0aa7e1cb6b 100644
--- a/mojo/dart/embedder/io/internet_address_patch.dart
+++ b/mojo/dart/embedder/io/internet_address_patch.dart
@@ -188,9 +188,9 @@ NetAddressFamily _internetAddressTypeToAddressFamily(InternetAddressType type) {
     return NetAddressFamily.unspecified;
   }
   if (type == InternetAddressType.IP_V4) {
-    return NetAddressFamily.ipV4;
+    return NetAddressFamily.ipv4;
   } else if (type == InternetAddressType.IP_V6) {
-    return NetAddressFamily.ipV6;
+    return NetAddressFamily.ipv6;
   }
   return NetAddressFamily.unspecified;
 }