Move animationgenerator.dart to sky/framework/animation/generator.dart

sky/framework/animation/generator.dart

Index: sky/framework/animation/generator.dart
diff --git a/sky/examples/fn/widgets/animationgenerator.dart b/sky/framework/animation/generator.dart
similarity index 86%
rename from sky/examples/fn/widgets/animationgenerator.dart
rename to sky/framework/animation/generator.dart
index ef916548946b2892db204aaee920b0ae8470ff76..cd34fae08b35d72ff2cd773c8065a799fdd3060a 100644
--- a/sky/examples/fn/widgets/animationgenerator.dart
+++ b/sky/framework/animation/generator.dart
@@ -1,7 +1,13 @@
-part of widgets;
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
 
-class FrameGenerator {
+import 'curves.dart';
+import 'dart:async';
+import 'dart:math' as math;
+import 'dart:sky' as sky;
 
+class FrameGenerator {
   Function onDone;
   StreamController _controller;
 
@@ -46,7 +52,6 @@ class FrameGenerator {
 }
 
 class AnimationGenerator extends FrameGenerator {
-
   Stream<double> get onTick => _stream;
   final double duration;
   final double begin;