Reorganize tests for samples so the test is discoverable from the sample

samples/tests/samples/lib/layout/grid_layout_demo.dart

Index: samples/tests/samples/lib/layout/grid_layout_demo.dart
diff --git a/samples/tests/samples/lib/layout/grid_layout_demo.dart b/samples/tests/samples/lib/layout/grid_layout_demo.dart
deleted file mode 100644
index 5585210b8ab5166311a7fd429217329da8d0587f..0000000000000000000000000000000000000000
--- a/samples/tests/samples/lib/layout/grid_layout_demo.dart
+++ /dev/null
@@ -1,128 +0,0 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-part of layout_tests;
-
-/**
- * An app for testing the grid layout system.
- */
-
-/** Creates a grid view structure given the CSS styles. */
-View createGrid(Map<String, Map<String, String>> styles) {
-  final gridStyle = styles['#grid'];
-
-  final children = new List<MockView>();
-  for (final String id in styles.keys) {
-    // All selectors in this test are id selectors string the # prefix.
-    assert(id.startsWith('#'));
-    String elemId = id.substring(1);
-    if (elemId != 'grid') {
-      children.add(new MockView(elemId, styles[id]));
-    }
-  }
-
-  return new MockCompositeView('grid', gridStyle, children);
-}
-
-void _onLoad() {
-  var query = SwarmUri.parseQuery(window.location.search)['q'];
-  if (query != null && query.length == 1) {
-    query = SwarmUri.decodeComponent(query[0]);
-    addGridStyles('100%', '100%', 'margin:0px;');
-    final view = createGrid(GridExamples.styles[query]);
-    view.addToDocument(document.body);
-    _addColorStyles();
-    printMetrics(query);
-  } else {
-    final html = new StringBuffer();
-    for (String ex in GridExamples.styles.keys) {
-      html.write('<div><a href="?q=$ex">Grid Example $ex</a></div>');
-    }
-    document.body.innerHTML = html.toString();
-  }
-}
-
-void addGridStyles(String width, String height, [String margin = '']) {
-  // Use monospace font and fixed line-height so the text size is predictable.
-  // TODO(jmesserly): only tested on Chromium Mac/Linux
-  Dom.addStyle('''
-    body { $margin }
-    #grid {
-      position: absolute;
-      width: $width;
-      height: $height;
-      border-color: black;
-    }
-    .grid-item {
-      border: solid 2px;
-      border-radius: 8px;
-      font-family:monospace;
-      font-size:16px;
-      line-height:20px;
-    }
-    ''');
-}
-
-void _addColorStyles() {
-  final grid = document.body.query('#grid');
-  final colors = const [ 'darkred', 'darkorange', 'darkgoldenrod',
-                         'darkgreen', 'darkblue', 'darkviolet'];
-  int c = 0;
-  var node = grid.children[0];
-  while (node != null) {
-    if (node.id != '') {
-      node.style.cssText += "color:" + colors[c++];
-    }
-    node = node.nextElementSibling;
-  }
-}
-
-class MockCompositeView extends CompositeView {
-   MockCompositeView(String id, Map styles, List childViews)
-    : super('') {
-    node.id = id;
-    CollectionUtils.copyMap(customStyle, styles);
-
-    for (final v in childViews) {
-      addChild(v);
-    }
-  }
-}
-
-class MockView extends View {
-  MockView(String id, Map styles)
-      : super.fromNode(new Element.html(
-          '<div class="grid-item">MockView-$id</div>')) {
-    node.id = id;
-    CollectionUtils.copyMap(customStyle, styles);
-    // TODO(jmesserly): this is needed to get horizontal content-sizing to work
-    node.style.display = 'inline-block';
-  }
-}
-
-
-void printMetrics(String example) {
-  final node = document.body.query('#grid');
-  String exampleId = example.split(' ')[0];
-  final sb = new StringBuffer();
-  sb.write("test('Spec Example $exampleId', () {\n");
-  sb.write("  verifyExample('$example', {\n");
-  final children = node.children;
-
-  window.setImmediate(() {
-    for (int i = 0; i < children.length; i++) {
-      _appendMetrics(sb, children[i], '    ');
-    }
-    sb.write('  });\n');
-    sb.write('});\n\n');
-    window.console.log(sb.toString());
-  });
-}
-
-void _appendMetrics(StringBuffer sb, Element node, [String indent = '']) {
-  String id = node.id;
-  num left = node.offsetLeft, top = node.offsetTop;
-  num width = node.offsetWidth, height = node.offsetHeight;
-  sb.write("${indent}'$id': [$left, $top, $width, $height],\n");
-}