Make core libraries use generic method syntax.

sdk/lib/async/timer.dart

Index: sdk/lib/async/timer.dart
diff --git a/sdk/lib/async/timer.dart b/sdk/lib/async/timer.dart
index 1bbb65b93307a81837011043cd1f72c014010bdd..72206ff2eaf97ca33482bae8bb1cdc966a501595 100644
--- a/sdk/lib/async/timer.dart
+++ b/sdk/lib/async/timer.dart
@@ -78,7 +78,7 @@ abstract class Timer {
     }
     // TODO(floitsch): the return type should be 'void', and the type
     // should be inferred.
-    var boundCallback = Zone.current.bindUnaryCallback/*<dynamic, Timer>*/(
+    var boundCallback = Zone.current.bindUnaryCallback<dynamic, Timer>(
         callback, runGuarded: true);
     return Zone.current.createPeriodicTimer(duration, boundCallback);
   }