Turn on createNewDisplayList for two obvious use cases: RenderInkWell and RenderTransform.

sky/sdk/lib/widgets/ink_well.dart

Index: sky/sdk/lib/widgets/ink_well.dart
diff --git a/sky/sdk/lib/widgets/ink_well.dart b/sky/sdk/lib/widgets/ink_well.dart
index d00530d1f2bbc4d878288ecfd058c36aab4aec25..5feae55f9edf3574b75a13f4daa62b12607e75a6 100644
--- a/sky/sdk/lib/widgets/ink_well.dart
+++ b/sky/sdk/lib/widgets/ink_well.dart
@@ -60,6 +60,8 @@ class InkSplash {
 }
 
 class RenderInkWell extends RenderProxyBox {
+  bool get createNewDisplayList => true;
+
   RenderInkWell({ RenderBox child }) : super(child);
 
   final List<InkSplash> _splashes = new List<InkSplash>();