Rename AppView to SkyBinding.

Move app/view.dart to rendering/sky_binding.dart since it's part of the RenderObject API, really (it knows about RenderView intimately).
The tests pass. I didn't check every last example.

R=abarth@chromium.org

Review URL: https://codereview.chromium.org/1183913006.

examples/game/main.dart

 import 'dart:sky';
-import 'lib/game_demo.dart';
-import 'lib/sprites.dart';
+
 import 'package:sky/widgets/basic.dart';
-import 'package:sky/app/view.dart';
-import 'package:sky/widgets/ui_node.dart';
 import 'package:sky/widgets/raised_button.dart';
+import 'package:sky/widgets/widget.dart';
 
-AppView app;
+import 'lib/game_demo.dart';
+import 'lib/sprites.dart';
 
 void main() {
   // Load images
@@ -28,7 +27,7 @@ void allLoaded(ImageMap loader) {
 
 class GameDemoApp extends App {
 
-  UINode build() {
+  Widget build() {
     return new Stack([
       new GameDemo(),
 //      new StackPositionedChild(
@@ -53,7 +52,7 @@ ImageMap _loader;
 
 class GameDemo extends OneChildRenderObjectWrapper {
 
-  GameDemo({ UINode child, Object key })
+  GameDemo({ Widget child, Object key })
   : super(child: child, key: key);
 
   GameDemoBox get root { return super.root; }

examples/rendering/borders.dart

@@ -4,15 +4,12 @@
 
 import 'dart:math' as math;
 import 'dart:sky' as sky;
-import 'package:sky/app/view.dart';
-import 'package:sky/rendering/box.dart';
-import 'package:sky/rendering/block.dart';
 
-AppView app;
+import 'package:sky/rendering/block.dart';
+import 'package:sky/rendering/box.dart';
+import 'package:sky/rendering/sky_binding.dart';
 
 void main() {
-
-
   var root = new RenderBlock(children: [
     new RenderPadding(
       padding: new EdgeDims.all(10.0),
@@ -76,5 +73,5 @@ void main() {
       )
     ),
   ]);
-  app = new AppView(root: root);
+  new SkyBinding(root: root);
 }

examples/rendering/interactive_flex.dart

@@ -4,14 +4,16 @@
 
 import 'dart:sky';
 import 'dart:math' as math;
+
 import 'package:sky/framework/net/image_cache.dart' as image_cache;
-import 'package:sky/app/view.dart';
 import 'package:sky/painting/text_style.dart';
-import 'package:sky/rendering/box.dart';
 import 'package:sky/rendering/block.dart';
+import 'package:sky/rendering/box.dart';
 import 'package:sky/rendering/flex.dart';
 import 'package:sky/rendering/object.dart';
 import 'package:sky/rendering/paragraph.dart';
+import 'package:sky/rendering/sky_binding.dart';
+
 import '../lib/solid_color_box.dart';
 
 class Touch {
@@ -35,7 +37,6 @@ class RenderImageGrow extends RenderImage {
   }
 }
 
-AppView app;
 RenderImageGrow image;
 
 Map<int, Touch> touches = new Map();
@@ -95,6 +96,6 @@ Pancetta meatball tongue tenderloin rump tail jowl boudin.""";
     child: row
   );
 
-  app = new AppView(root: root);
+  new SkyBinding(root: root);
   view.setEventCallback(handleEvent);
 }

examples/rendering/justify_content.dart

@@ -4,15 +4,15 @@
 
 import 'dart:sky';
 import 'dart:math' as math;
-import 'package:sky/app/view.dart';
-import 'package:sky/rendering/box.dart';
+
 import 'package:sky/rendering/block.dart';
+import 'package:sky/rendering/box.dart';
 import 'package:sky/rendering/flex.dart';
 import 'package:sky/rendering/object.dart';
 import 'package:sky/rendering/paragraph.dart';
-import '../lib/solid_color_box.dart';
+import 'package:sky/rendering/sky_binding.dart';
 
-AppView app;
+import '../lib/solid_color_box.dart';
 
 // Attempts to draw
 // http://www.w3.org/TR/2015/WD-css-flexbox-1-20150514/images/flex-pack.svg
@@ -42,5 +42,5 @@ void main() {
     child: new RenderPadding(child: table, padding: new EdgeDims.symmetric(vertical: 50.0))
   );
 
-  app = new AppView(root: root);
+  new SkyBinding(root: root);
 }

examples/rendering/render_paragraph.dart

@@ -3,15 +3,15 @@
 // found in the LICENSE file.
 
 import 'dart:sky';
-import 'package:sky/app/view.dart';
+
 import 'package:sky/painting/text_style.dart';
 import 'package:sky/rendering/box.dart';
-import 'package:sky/rendering/object.dart';
 import 'package:sky/rendering/flex.dart';
+import 'package:sky/rendering/object.dart';
 import 'package:sky/rendering/paragraph.dart';
-import '../lib/solid_color_box.dart';
+import 'package:sky/rendering/sky_binding.dart';
 
-AppView app;
+import '../lib/solid_color_box.dart';
 
 void main() {
   RenderFlex flexRoot = new RenderFlex(direction: FlexDirection.vertical);
@@ -42,5 +42,5 @@ Pancetta meatball tongue tenderloin rump tail jowl boudin.""";
   flexRoot.add(child);
   child.parentData.flex = 1;
 
-  app = new AppView(root: root);
+  new SkyBinding(root: root);
 }

examples/rendering/sector_layout.dart

@@ -4,9 +4,10 @@
 
 import 'dart:math' as math;
 import 'dart:sky' as sky;
-import 'package:sky/app/view.dart';
+
 import 'package:sky/rendering/box.dart';
 import 'package:sky/rendering/object.dart';
+import 'package:sky/rendering/sky_binding.dart';
 
 const double kTwoPi = 2 * math.PI;
 
@@ -522,5 +523,5 @@ RenderBox buildSectorExample() {
 }
 
 void main() {
-  new AppView(root: buildSectorExample());
+  new SkyBinding(root: buildSectorExample());
 }

examples/rendering/shadowed_box.dart

@@ -3,14 +3,13 @@
 // found in the LICENSE file.
 
 import 'dart:sky';
-import 'package:sky/app/view.dart';
+
 import 'package:sky/rendering/box.dart';
 import 'package:sky/rendering/flex.dart';
+import 'package:sky/rendering/sky_binding.dart';
 import 'package:sky/theme2/colors.dart';
 import 'package:sky/theme2/shadows.dart';
 
-AppView app;
-
 void main() {
   var coloredBox = new RenderDecoratedBox(
     decoration: new BoxDecoration(
@@ -22,7 +21,7 @@ void main() {
   var paddedBox = new RenderPadding(
     padding: const EdgeDims.all(50.0),
     child: coloredBox);
-  app = new AppView(root: new RenderDecoratedBox(
+  new SkyBinding(root: new RenderDecoratedBox(
     decoration: const BoxDecoration(
       backgroundColor: const Color(0xFFFFFFFF)
     ),

examples/rendering/spinning_flex.dart

@@ -6,14 +6,13 @@ import 'dart:sky' as sky;
 import 'dart:math' as math;
 
 import 'package:sky/app/scheduler.dart';
-import 'package:sky/app/view.dart';
 import 'package:sky/rendering/box.dart';
 import 'package:sky/rendering/flex.dart';
+import 'package:sky/rendering/sky_binding.dart';
 import 'package:vector_math/vector_math.dart';
 
 import '../lib/solid_color_box.dart';
 
-AppView app;
 double timeBase;
 RenderTransform transformBox;
 
@@ -34,7 +33,7 @@ void main() {
 
   RenderPadding root = new RenderPadding(padding: new EdgeDims.all(20.0), child: transformBox);
 
-  app = new AppView(root: root);
+  new SkyBinding(root: root);
 
   addPersistentFrameCallback(rotate);
 }

examples/rendering/touch_demo.dart

@@ -5,10 +5,10 @@
 import 'dart:math';
 import 'dart:sky';
 
-import 'package:sky/app/view.dart';
 import 'package:sky/rendering/box.dart';
 import 'package:sky/rendering/object.dart';
 import 'package:sky/rendering/paragraph.dart';
+import 'package:sky/rendering/sky_binding.dart';
 import 'package:sky/rendering/stack.dart';
 import 'package:sky/theme2/colors.dart';
 
@@ -77,8 +77,6 @@ class RenderTouchDemo extends RenderBox {
   }
 }
 
-AppView app;
-
 void main() {
   var paragraph = new RenderParagraph(new InlineText("Touch me!"));
   var stack = new RenderStack(children: [
@@ -89,5 +87,5 @@ void main() {
   // that it doesn't eat events.
   paragraph.parentData..top = 40.0
                       ..left = 20.0;
-  app = new AppView(root: stack);
+  new SkyBinding(root: stack);
 }

examples/rendering/transform.dart

@@ -3,13 +3,12 @@
 // found in the LICENSE file.
 
 import 'dart:sky' as sky;
-import 'package:sky/app/view.dart';
-import 'package:sky/rendering/flex.dart';
+
 import 'package:sky/rendering/box.dart';
+import 'package:sky/rendering/flex.dart';
+import 'package:sky/rendering/sky_binding.dart';
 import 'package:vector_math/vector_math.dart';
 
-AppView app;
-
 void main() {
   RenderDecoratedBox green = new RenderDecoratedBox(
     decoration: new BoxDecoration(backgroundColor: const sky.Color(0xFF00FF00))
@@ -26,5 +25,5 @@ void main() {
 
   RenderFlex flex = new RenderFlex();
   flex.add(spin);
-  app = new AppView(root: flex);
+  new SkyBinding(root: flex);
 }

examples/stocks2/lib/stock_app.dart

@@ -35,8 +35,8 @@ class StocksApp extends App {
 void main() {
   print("starting stocks app!");
   runApp(new StocksApp());
-  WidgetAppView.appView.onFrame = () {
+  WidgetSkyBinding.skyBinding.onFrame = () {
     // uncomment this for debugging:
-    // WidgetAppView.appView.debugDumpRenderTree();
+    // WidgetSkyBinding.skyBinding.debugDumpRenderTree();
   };
 }

examples/widgets/hello_widgets.dart

@@ -6,7 +6,7 @@ import 'package:sky/widgets/basic.dart';
 
 class HelloWorldApp extends App {
   Widget build() {
-    return new Text('Hello, fn2!');
+    return new Text('Hello, widgets!');
   }
 }
 

examples/widgets/sector.dart

@@ -136,8 +136,8 @@ class SectorApp extends App {
 
 void main() {
   runApp(new SectorApp());
-  WidgetAppView.appView.onFrame = () {
+  WidgetSkyBinding.skyBinding.onFrame = () {
     // uncomment this for debugging:
-    // WidgetAppView.appView.debugDumpRenderTree();
+    // WidgetSkyBinding.skyBinding.debugDumpRenderTree();
   };
 }

examples/widgets/spinning_mixed.dart

@@ -75,12 +75,12 @@ void rotate(double timeStamp) {
 
 void main() {
   // Because we're going to use Widgets, we want to initialise its
-  // AppView, not use the default one. We don't really need to do
+  // SkyBinding, not use the default one. We don't really need to do
   // this, because RenderBoxToWidgetAdapter does it for us, but
   // it's good practice in case we happen to not have a
   // RenderBoxToWidgetAdapter in our tree at startup, or in case we
   // want a renderViewOverride.
-  WidgetAppView.initWidgetAppView();
+  WidgetSkyBinding.initWidgetSkyBinding();
 
   RenderFlex flexRoot = new RenderFlex(direction: FlexDirection.vertical);
 
@@ -94,6 +94,6 @@ void main() {
   transformBox = new RenderTransform(child: flexRoot, transform: new Matrix4.identity());
   RenderPadding root = new RenderPadding(padding: new EdgeDims.all(20.0), child: transformBox);
 
-  WidgetAppView.appView.root = root;
+  WidgetSkyBinding.skyBinding.root = root;
   addPersistentFrameCallback(rotate);
 }