Implement RenderImage and Image for Sky

sky/sdk/lib/framework/fn2.dart

Index: sky/sdk/lib/framework/fn2.dart
diff --git a/sky/sdk/lib/framework/fn2.dart b/sky/sdk/lib/framework/fn2.dart
index 9a4538bcaedaafaf69d554d8845b038f5f6974c5..65e68391c40834660965dab62ea45f48405f2cf8 100644
--- a/sky/sdk/lib/framework/fn2.dart
+++ b/sky/sdk/lib/framework/fn2.dart
@@ -13,6 +13,7 @@ import 'app.dart';
 import 'rendering/render_block.dart';
 import 'rendering/render_box.dart';
 import 'rendering/render_flex.dart';
+import 'rendering/render_image.dart';
 import 'rendering/render_node.dart';
 import 'rendering/render_paragraph.dart';
 
@@ -545,12 +546,16 @@ class FlexExpandingChild extends ParentDataNode {
 }
 
 class Image extends RenderNodeWrapper {
-  RenderCSSImage root;
-  RenderCSSImage createNode() => new RenderCSSImage(this, this.src, this.width, this.height);
+  RenderImage root;
+  RenderImage createNode() => new RenderImage(this.src, this.width, this.height);
+
+  static final Image _emptyImage = new Image();
+
+  RenderNodeWrapper get emptyNode => _emptyImage;

[abarth-chromium, 2015/06/03 00:07:53]

We don't need _emptyImage or emptyNode anymore.

[jackson, 2015/06/03 17:41:42]

Acknowledged.

 
   final String src;
-  final int width;
-  final int height;
+  final double width;
+  final double height;
 
   Image({
     Object key,