Move examples to //sky/sdk/example

We're trying to follow the pattern described in https://www.dartlang.org/tools/pub/package-layout.html

TBR=iansf@google.com

Review URL: https://codereview.chromium.org/1210173004.

apk/stocks/org/domokit/stocks/StocksActivity.java

@@ -18,6 +18,6 @@ public class StocksActivity extends SkyActivity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        loadUrl("https://domokit.github.io/sky/sdk/lib/example/stocks/index.sky");
+        loadUrl("https://domokit.github.io/sky/sdk/example/stocks/index.sky");
     }
 }

sdk/README.md

@@ -88,7 +88,7 @@ to the underlying render tree.
  * To learn how to run Sky on your device, please see the
    [Running a Sky application](#running-a-sky-application) section in this
    document.
- * To dive into examples, please see the [examples directory](lib/example).
+ * To dive into examples, please see the [examples directory](example/).
 
 Services
 --------
@@ -146,7 +146,7 @@ Sky applications inside the `SkyDemo.apk` harness.  The `sky_tool` script
 expects to be run from the root directory of your application pub package. To
 run one of the examples in this SDK, try:
 
-1. `cd sdk/lib/example/stocks`
+1. `cd example/stocks`
 
 2. `pub get` to set up a copy of the sky package in the app directory.
 

sdk/home.dart

@@ -51,17 +51,17 @@ class SkyDemo extends Component {
 class SkyHome extends App {
   Widget build() {
     List<Widget> children = [
-      new SkyDemo('Stocks App', 'lib/example/stocks2/lib/stock_app.dart'),
-      new SkyDemo('Asteroids Game', 'lib/example/game/main.dart'),
-      new SkyDemo('Interactive Flex', 'lib/example/rendering/interactive_flex.dart'),
-      new SkyDemo('Sector Layout', 'lib/example/widgets/sector.dart'),
-      new SkyDemo('Touch Demo', 'lib/example/rendering/touch_demo.dart'),
-      new SkyDemo('Minedigger Game', 'lib/example/mine_digger/mine_digger.dart'),
+      new SkyDemo('Stocks App', 'example/stocks2/lib/stock_app.dart'),
+      new SkyDemo('Asteroids Game', 'example/game/main.dart'),
+      new SkyDemo('Interactive Flex', 'example/rendering/interactive_flex.dart'),
+      new SkyDemo('Sector Layout', 'example/widgets/sector.dart'),
+      new SkyDemo('Touch Demo', 'example/rendering/touch_demo.dart'),
+      new SkyDemo('Minedigger Game', 'example/mine_digger/mine_digger.dart'),
 
       // TODO(eseidel): We could use to separate these groups?
-      new SkyDemo('Old Stocks App', 'lib/example/stocks/main.sky'),
-      new SkyDemo('Old Touch Demo', 'lib/example/raw/touch-demo.sky'),
-      new SkyDemo('Old Spinning Square', 'lib/example/raw/spinning-square.sky'),
+      new SkyDemo('Old Stocks App', 'example/stocks/main.sky'),
+      new SkyDemo('Old Touch Demo', 'example/raw/touch-demo.sky'),
+      new SkyDemo('Old Spinning Square', 'example/raw/spinning-square.sky'),
 
       new SkyDemo('Licences (Old)', 'LICENSES.sky'),
     ];

sdk/lib/rendering/README.md

@@ -147,7 +147,7 @@ If you want to define a `RenderObject` that uses a new coordinate
 system, then you should inherit straight from `RenderObject`. Examples
 of doing this can be found in [`RenderBox`](box.dart), which deals in
 rectangles in cartesian space, and in the [sector_layout.dart
-example](../../../sdk/lib/example/rendering/sector_layout.dart), which
+example](../../example/rendering/sector_layout.dart), which
 implements a toy model based on polar coordinates. The `RenderView`
 class, which is used internally to adapt from the host system to this
 rendering framework, is another example.

tests/examples/sector.dart

@@ -6,7 +6,7 @@ import 'dart:async';
 
 import 'package:sky/widgets/widget.dart';
 
-import '../../sdk/lib/example/widgets/sector.dart';
+import '../../sdk/example/widgets/sector.dart';
 import '../resources/display_list.dart';
 
 main() async {

tests/examples/stocks.dart

@@ -6,7 +6,7 @@ import 'dart:async';
 
 import 'package:sky/widgets/widget.dart';
 
-import '../../sdk/lib/example/stocks2/lib/stock_app.dart';
+import '../../sdk/example/stocks2/lib/stock_app.dart';
 import '../resources/display_list.dart';
 
 class TestStocksApp extends StocksApp {

tests/examples/styled_text.dart

@@ -6,7 +6,7 @@ import 'dart:async';
 
 import 'package:sky/widgets/widget.dart';
 
-import '../../sdk/lib/example/widgets/styled_text.dart';
+import '../../sdk/example/widgets/styled_text.dart';
 import '../resources/display_list.dart';
 
 main() async {

tests/examples/tabs.dart

@@ -6,7 +6,7 @@ import 'dart:async';
 
 import 'package:sky/widgets/widget.dart';
 
-import '../../sdk/lib/example/widgets/tabs.dart';
+import '../../sdk/example/widgets/tabs.dart';
 import '../resources/display_list.dart';
 
 main() async {

tests/raw/sector_layout.dart

@@ -4,7 +4,7 @@
 
 import 'dart:async';
 
-import '../../sdk/lib/example/rendering/sector_layout.dart';
+import '../../sdk/example/rendering/sector_layout.dart';
 import '../resources/display_list.dart';
 
 void main() {

tools/webkitpy/layout_tests/run_webkit_tests.py

@@ -397,7 +397,7 @@ def run_analyzer(port, options, args, logging_stream):
     sky_tools_dir = os.path.dirname(os.path.dirname(test_dir))
     analyzer_path = os.path.join(sky_tools_dir, 'skyanalyzer')
     src_dir = os.path.dirname(os.path.dirname(sky_tools_dir))
-    analyzer_target_path = os.path.join(src_dir, 'sky/sdk/lib/example/stocks2/lib/stock_app.dart')
+    analyzer_target_path = os.path.join(src_dir, 'sky/sdk/example/stocks2/lib/stock_app.dart')
     analyzer_args = [
         analyzer_path,
         build_dir,