Break some lines to make debugging easier.

sky/sdk/lib/widgets/widget.dart

Index: sky/sdk/lib/widgets/widget.dart
diff --git a/sky/sdk/lib/widgets/widget.dart b/sky/sdk/lib/widgets/widget.dart
index 4f8bd02b6253a53837d79da714d13f8a35d0e83d..f4965ef7fecf09954d7edfe2275678506f4eb2ed 100644
--- a/sky/sdk/lib/widgets/widget.dart
+++ b/sky/sdk/lib/widgets/widget.dart
@@ -124,7 +124,10 @@ abstract class Widget {
       return null;
     }
 
-    if (oldNode != null && oldNode.runtimeType == node.runtimeType && node.key == oldNode.key && node._retainStatefulNodeIfPossible(oldNode)) {
+    if (oldNode != null &&
+        oldNode.runtimeType == node.runtimeType &&
+        oldNode.key == node.key &&
+        node._retainStatefulNodeIfPossible(oldNode)) {
       assert(oldNode.mounted);
       assert(!node.mounted);
       oldNode._sync(node, slot);
@@ -132,7 +135,8 @@ abstract class Widget {
       return oldNode;
     }
 
-    if (oldNode != null && (oldNode.runtimeType != node.runtimeType || node.key != oldNode.key)) {
+    if (oldNode != null &&
+        (oldNode.runtimeType != node.runtimeType || oldNode.key != node.key)) {
       assert(oldNode.mounted);
       removeChild(oldNode);
       oldNode = null;