Organize sky/framework/animation

sky/framework/components/fixed_height_scrollable.dart

Index: sky/framework/components/fixed_height_scrollable.dart
diff --git a/sky/framework/components/fixed_height_scrollable.dart b/sky/framework/components/fixed_height_scrollable.dart
index b388b17635a069551a24e4f200e482bec09a7d3b..6e1605c2e32715dfc457c17a23ab2f49216c75ff 100644
--- a/sky/framework/components/fixed_height_scrollable.dart
+++ b/sky/framework/components/fixed_height_scrollable.dart
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import '../animation/scroll_curve.dart';
+import '../animation/scroll_behavior.dart';
 import '../fn.dart';
 import 'dart:math' as math;
 import 'dart:sky' as sky;
@@ -29,8 +29,8 @@ abstract class FixedHeightScrollable extends Scrollable {
 
   FixedHeightScrollable({
     Object key,
-    ScrollCurve scrollCurve
-  }) : super(key: key, scrollCurve: scrollCurve);
+    ScrollBehavior scrollBehavior
+  }) : super(key: key, scrollBehavior: scrollBehavior);
 
   void didMount() {
     super.didMount();