pkg/logging: adding Type information

pkg/logging/lib/logging.dart

Index: pkg/logging/lib/logging.dart
diff --git a/pkg/logging/lib/logging.dart b/pkg/logging/lib/logging.dart
index 935b3aeffec2b16d705fc10da992e149f9449e03..89682fa5da3ee5b899e9233eaf4052ed857267fa 100644
--- a/pkg/logging/lib/logging.dart
+++ b/pkg/logging/lib/logging.dart
@@ -91,7 +91,7 @@ class Logger {
   }
 
   /** Override the level for this particular [Logger] and its children. */
-  set level(value) {
+  set level(Level value) {
     if (hierarchicalLoggingEnabled && parent != null) {
       _level = value;
     } else {
@@ -201,7 +201,7 @@ class Logger {
   }
 
   /** Top-level root [Logger]. */
-  static get root => new Logger('');
+  static Logger get root => new Logger('');
 
   /** All [Logger]s in the system. */
   static Map<String, Logger> _loggers;