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

sky/examples/widgets/tabs.dart

Index: sky/examples/widgets/tabs.dart
diff --git a/sky/examples/widgets/tabs.dart b/sky/examples/widgets/tabs.dart
deleted file mode 100644
index 320b0fc57d858a63a41f3c2add80437bbbfbd510..0000000000000000000000000000000000000000
--- a/sky/examples/widgets/tabs.dart
+++ /dev/null
@@ -1,62 +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 'package:sky/theme/colors.dart';
-import 'package:sky/theme/typography.dart';
-import 'package:sky/widgets/basic.dart';
-import 'package:sky/widgets/material.dart';
-import 'package:sky/widgets/scaffold.dart';
-import 'package:sky/widgets/tabs.dart';
-import 'package:sky/widgets/tool_bar.dart';
-import 'package:sky/widgets/widget.dart';
-
-class TabbedNavigatorApp extends App {
-  static Iterable<String> items = const <String>["ONE", "TWO", "FREE", "FOUR"];
-  final List<int> navigatorSelections = new List<int>.filled(items.length, 0);
-
-  Widget buildTabNavigator(Iterable<TabLabel> labels, int navigatorIndex) {
-    TabBar tabBar = new TabBar(
-      labels: labels.toList(),
-      selectedIndex: navigatorSelections[navigatorIndex],
-      onChanged: (selectionIndex) {
-        setState(() { 
-          navigatorSelections[navigatorIndex] = selectionIndex;
-        });
-      }
-    );
-
-    return new Container(child: tabBar, margin: new EdgeDims.only(bottom: 16.0));
-  }
-
-  Widget build() {
-    Iterable<TabLabel> textLabels = items
-      .map((s) => new TabLabel(text: "ITEM " + s));
-
-    Iterable<TabLabel> iconLabels = items
-      .map((s) => new TabLabel(icon: 'action/search_white'));
-
-    Iterable<TabLabel> textAndIconLabels = items
-      .map((s) => new TabLabel(text: "ITEM " + s, icon: 'action/search_white'));
-
-    var navigatorIndex = 0;
-    Iterable<Widget> tabNavigators = [textLabels, iconLabels, textAndIconLabels]
-      .map((labels) => buildTabNavigator(labels, navigatorIndex++));
-
-    ToolBar toolbar = new ToolBar(
-      center: new Text('Tabbed Navigator', style: white.title)
-    );
-
-    return new Scaffold(
-      toolbar: toolbar,
-      body: new Material(
-        child: new Center(child: new Block(tabNavigators.toList())),
-        color: Grey[500]
-      )
-    );
-  }
-}
-
-void main() {
-  runApp(new TabbedNavigatorApp());
-}