Use AnimatedContainer for card_collection.dart.

sky/sdk/lib/widgets/drawer.dart

Index: sky/sdk/lib/widgets/drawer.dart
diff --git a/sky/sdk/lib/widgets/drawer.dart b/sky/sdk/lib/widgets/drawer.dart
index ab5239748f9fa4bc1bb56217c3bc0d9894bb9173..e64974a6d026de1cb135226a2c9879bd7e14a76e 100644
--- a/sky/sdk/lib/widgets/drawer.dart
+++ b/sky/sdk/lib/widgets/drawer.dart
@@ -40,7 +40,7 @@ class DrawerController {
     container = new AnimatedContainer()
       ..position = new AnimatedType<Point>(
           new Point(-_kWidth, 0.0), end: Point.origin, curve: _kAnimationCurve);
-    performance = container.createPerformance(container.position,
+    performance = container.createPerformance([container.position],
                                               duration: _kBaseSettleDuration)
         ..addListener(_checkValue);
   }