Rename insert() to insertChildRoot() so it's consistent with detachChildRoot().

sky/sdk/lib/widgets/basic.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 'package:vector_math/vector_math.dart';
 
 import '../painting/text_style.dart';
 import '../rendering/block.dart';
 import '../rendering/box.dart';
 import '../rendering/flex.dart';
@@ skipping 341 matching lines @@
   RenderParagraph get root => super.root;
   RenderParagraph createNode() => new RenderParagraph(text);
 
   final InlineBase text;
 
   void syncRenderObject(Widget old) {
     super.syncRenderObject(old);
     root.inline = text;
   }
 
-  void insert(RenderObjectWrapper child, dynamic slot) {
+  void insertChildRoot(RenderObjectWrapper child, dynamic slot) {
     assert(false);
     // Inline does not support having children currently
   }
 
 }
 
 class Text extends Component {
   Text(data, { String key, TextStyle this.style }) : data = data, super(key: key);
   final String data;
   final TextStyle style;
@@ skipping 18 matching lines @@
 
   final String src;
   final Size size;
 
   void syncRenderObject(Widget old) {
     super.syncRenderObject(old);
     root.src = src;
     root.requestedSize = size;
   }
 
-  void insert(RenderObjectWrapper child, dynamic slot) {
+  void insertChildRoot(RenderObjectWrapper child, dynamic slot) {
     assert(false);
     // Image does not support having children currently
   }
 
 }
 
 class WidgetToRenderBoxAdapter extends RenderObjectWrapper {
 
   WidgetToRenderBoxAdapter(RenderBox renderBox)
     : this.renderBox = renderBox,
       super(key: renderBox.hashCode.toString());
 
   RenderBox get root => super.root;
   RenderBox createNode() => this.renderBox;
 
   final RenderBox renderBox;
 
   void syncRenderObject(Widget old) {
     super.syncRenderObject(old);
     if (old != null) {
       assert(old is WidgetToRenderBoxAdapter);
       assert(root == old.root);
     }
   }
 
-  void insert(RenderObjectWrapper child, dynamic slot) {
+  void insertChildRoot(RenderObjectWrapper child, dynamic slot) {
     assert(false);
     // WidgetToRenderBoxAdapter cannot have Widget children; by
     // definition, it is the transition out of the Widget world.
   }
 
   void remove() {
     parent.detachChildRoot(this);
     super.remove();
   }
 
 }