Use package:sky imports consistently

sky/sdk/lib/widgets/ink_well.dart

 // 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.
 
 import 'dart:math' as math;
 import 'dart:sky' as sky;
 
-import '../animation/animation_performance.dart';
-import '../animation/curves.dart';
-import '../rendering/box.dart';
-import '../rendering/object.dart';
-import 'basic.dart';
-import 'widget.dart';
+import 'package:sky/animation/animation_performance.dart';
+import 'package:sky/animation/curves.dart';
+import 'package:sky/rendering/box.dart';
+import 'package:sky/rendering/object.dart';
+import 'package:sky/widgets/basic.dart';
+import 'package:sky/widgets/widget.dart';
 
 const int _kSplashInitialOpacity = 0x80;
 const double _kSplashCancelledVelocity = 0.3;
 const double _kSplashConfirmedVelocity = 0.3;
 const double _kSplashInitialSize = 0.0;
 const double _kSplashUnconfirmedVelocity = 0.1;
 
 double _getSplashTargetSize(Size bounds, Point position) {
   return math.max(math.max(position.x, bounds.width - position.x),
                   math.max(position.y, bounds.height - position.y));
@@ skipping 99 matching lines @@
   }
 }
 
 class InkWell extends OneChildRenderObjectWrapper {
   InkWell({ String key, Widget child })
     : super(key: key, child: child);
 
   RenderInkWell get root => super.root;
   RenderInkWell createNode() => new RenderInkWell();
 }