Move sky/examples to sky/sdk/lib/example, and code changes to support that change. Fixes T277.

sky/examples/rendering/interactive_flex.dart

Index: sky/examples/rendering/interactive_flex.dart
diff --git a/sky/examples/rendering/interactive_flex.dart b/sky/examples/rendering/interactive_flex.dart
deleted file mode 100644
index 0868ffc0ba90b5404a5acbc8fc89df7c2eba6774..0000000000000000000000000000000000000000
--- a/sky/examples/rendering/interactive_flex.dart
+++ /dev/null
@@ -1,101 +0,0 @@
-// 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 'dart:sky';
-import 'dart:math' as math;
-
-import 'package:sky/mojo/net/image_cache.dart' as image_cache;
-import 'package:sky/painting/text_style.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 {
-  final double x;
-  final double y;
-  const Touch(this.x, this.y);
-}
-
-class RenderImageGrow extends RenderImage {
-  final Size _startingSize;
-
-  RenderImageGrow(String src, Size size) : _startingSize = size, super(src, size);
-
-  double _growth = 0.0;
-  double get growth => _growth;
-  void set growth(double value) {
-    _growth = value;
-    double newWidth = _startingSize.width == null ? null : _startingSize.width + growth;
-    double newHeight = _startingSize.height == null ? null : _startingSize.height + growth;
-    requestedSize = new Size(newWidth, newHeight);
-  }
-}
-
-RenderImageGrow image;
-
-Map<int, Touch> touches = new Map();
-void handleEvent(event) {
-  if (event is PointerEvent) {
-      if (event.type == 'pointermove')
-        image.growth = math.max(0.0, image.growth + event.x - touches[event.pointer].x);
-    touches[event.pointer] = new Touch(event.x, event.y);
-  }
-}
-
-void main() {
-  void addFlexChildSolidColor(RenderFlex parent, Color backgroundColor, { int flex: 0 }) {
-    RenderSolidColorBox child = new RenderSolidColorBox(backgroundColor);
-    parent.add(child);
-    child.parentData.flex = flex;
-  }
-
-  var row = new RenderFlex(direction: FlexDirection.horizontal);
-
-  // Left cell
-  addFlexChildSolidColor(row, const Color(0xFF00D2B8), flex: 1);
-
-  // Resizeable image
-  image = new RenderImageGrow("https://www.dartlang.org/logos/dart-logo.png",
-                              new Size(100.0, null));
-  var padding = new RenderPadding(padding: const EdgeDims.all(10.0), child: image);
-  row.add(padding);
-
-  RenderFlex column = new RenderFlex(direction: FlexDirection.vertical);
-
-  // Top cell
-  addFlexChildSolidColor(column, const Color(0xFF55DDCA), flex: 1);
-
-  // The internet is a beautiful place.  https://baconipsum.com/
-  String meatyString = """Bacon ipsum dolor amet ham fatback tri-tip, prosciutto
-porchetta bacon kevin meatball meatloaf pig beef ribs chicken. Brisket ribeye
-andouille leberkas capicola meatloaf. Chicken pig ball tip pork picanha bresaola
-alcatra. Pork pork belly alcatra, flank chuck drumstick biltong doner jowl.
-Pancetta meatball tongue tenderloin rump tail jowl boudin.""";
-  var text = new InlineStyle(
-      new TextStyle(color:  const Color(0xFF009900)),
-      [new InlineText(meatyString)]);
-  padding = new RenderPadding(
-      padding: const EdgeDims.all(10.0),
-      child: new RenderParagraph(text));
-  column.add(padding);
-
-  // Bottom cell
-  addFlexChildSolidColor(column, const Color(0xFF0081C6), flex: 2);
-
-  row.add(column);
-  column.parentData.flex = 8;
-
-  RenderDecoratedBox root = new RenderDecoratedBox(
-    decoration: new BoxDecoration(backgroundColor: const Color(0xFFFFFFFF)),
-    child: row
-  );
-
-  new SkyBinding(root: root);
-  view.setEventCallback(handleEvent);
-}