Rename all the things

sky/sdk/lib/framework/painting/shadows.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:sky' as sky;
-
-/// Helper class to build a Paint DrawLooper that adds shadows to the Paint's
-/// operation.
-class ShadowDrawLooperBuilder {
-  var builder_ = new sky.LayerDrawLooperBuilder();
-
-  void addShadow(sky.Size offset, sky.Color color, double blur) {
-    builder_.addLayerOnTop(
-          new sky.DrawLooperLayerInfo()
-            ..setPaintBits(sky.PaintBits.all)
-            ..setOffset(offset.toPoint())
-            ..setColorMode(sky.TransferMode.srcMode),
-          (sky.Paint layerPaint) {
-        layerPaint.color = color;
-        layerPaint.setMaskFilter(
-          new sky.MaskFilter.blur(sky.BlurStyle.normal,
-                                  blur,
-                                  highQuality: true));
-      });
-  }
-
-  sky.DrawLooper build() {
-    builder_.addLayerOnTop(new sky.DrawLooperLayerInfo(), (_) {});
-    return builder_.build();
-  }
-}