add initState, rename animated_container

sky/sdk/lib/editing/input.dart

Index: sky/sdk/lib/editing/input.dart
diff --git a/sky/sdk/lib/editing/input.dart b/sky/sdk/lib/editing/input.dart
index ddcd2e9406d1f3787dea1a00a7938c698bbca03d..639b8bff60fd6410f3358ce99e011d20b7cae9b1 100644
--- a/sky/sdk/lib/editing/input.dart
+++ b/sky/sdk/lib/editing/input.dart
@@ -20,17 +20,20 @@ class Input extends StatefulComponent {
          this.placeholder,
          this.onChanged,
          this.focused})
-      : super(key: key) {
+      : super(key: key);
+
+  String placeholder;
+  ValueChanged onChanged;
+  bool focused = false;
+
+  void initState() {
     _editableValue = new EditableString(
       text: _value,
       onUpdated: _handleTextUpdated
     );
+    super.initState();
   }
 
-  String placeholder;
-  ValueChanged onChanged;
-  bool focused = false;
-
   void syncFields(Input source) {
     placeholder = source.placeholder;
     onChanged = source.onChanged;