Fix a couple of Dart style naming violations in Intl

pkg/intl/lib/src/intl/date_format.dart

Index: pkg/intl/lib/src/intl/date_format.dart
diff --git a/pkg/intl/lib/src/intl/date_format.dart b/pkg/intl/lib/src/intl/date_format.dart
index 54fb3f0c4d11f247530cf766d9105ff2f30eb5f6..3aede3676463472f2be68972f5ac67bda6cffde2 100644
--- a/pkg/intl/lib/src/intl/date_format.dart
+++ b/pkg/intl/lib/src/intl/date_format.dart
@@ -291,10 +291,24 @@ class DateFormat {
   /**
    * Given user input, attempt to parse the [inputString] into the anticipated
    * format, treating it as being in UTC.
+   *
+   * The canonical Dart style name
+   * is [parseUtc], but [parseUTC] is retained
+   * for backward-compatibility.
    */
   DateTime parseUTC(String inputString) => parse(inputString, true);
 
   /**
+   * Given user input, attempt to parse the [inputString] into the anticipated
+   * format, treating it as being in UTC.
+   *
+   * The canonical Dart style name
+   * is [parseUtc], but [parseUTC] is retained
+   * for backward-compatibility.
+   */
+  DateTime parseUtc(String inputString) => parse(inputString, true);
+
+  /**
    * Return the locale code in which we operate, e.g. 'en_US' or 'pt'.
    */
   String get locale => _locale;