Copy lib/dom tests that use dart:html to lib/html.

tests/dom/svg_1_test.dart

-#library('SVG1Test');
-#import('../../lib/unittest/unittest.dart');
-#import('../../lib/unittest/html_config.dart');
-#import('dart:html');
-
-// Test that SVG is present in dart:html API
-
-main() {
-  useHtmlConfiguration();
-
-  test('simpleRect', () {
-      var div = new Element.tag('div');
-      document.body.nodes.add(div);
-      div.innerHTML = @'''
-<svg id='svg1' width='200' height='100'>
-<rect id='rect1' x='10' y='20' width='130' height='40' rx='5'fill='blue'></rect>
-</svg>
-''';
-
-    var e = document.query('#svg1');
-    Expect.isTrue(e != null);
-
-    SVGRectElement r = document.query('#rect1');
-    Expect.equals(10, r.x.baseVal.value);
-    Expect.equals(20, r.y.baseVal.value);
-    Expect.equals(40, r.height.baseVal.value);
-    Expect.equals(130, r.width.baseVal.value);
-    Expect.equals(5, r.rx.baseVal.value);
-  });
-}