Revert "Blob constructor"

tests/html/blob_constructor_test.dart

-// Copyright (c) 2012, 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.
-
-#library('blob_test');
-#import('../../lib/unittest/unittest.dart');
-#import('../../lib/unittest/html_config.dart');
-#import('dart:html');
-
-main() {
-  useHtmlConfiguration();
-
-  test('basic', () {
-      var b = new Blob([]);
-      expect(b.size, 0);
-    });
-
-  test('type1', () {
-      var b = new Blob(['Harry'], type: 'text');
-      expect(b.size, 5);
-      expect(b.type, 'text');
-    });
-
-  test('endings1', () {
-      var b = new Blob(['A\nB\n'], endings: 'transparent');
-      expect(b.size, 4);
-    });
-
-  test('endings2', () {
-      var b = new Blob(['A\nB\n'], endings: 'native');
-      expect(b.size, (x) => x == 4 || x == 6);
-    });
-
-  test('twoStrings', () {
-      var b = new Blob(['123', 'xyz'], type: 'text/plain;charset=UTF-8');
-      expect(b.size, 6);
-    });
-
-  test('fromBlob1', () {
-      var b1 = new Blob([]);
-      var b2 = new Blob([b1]);
-      expect(b2.size, 0);
-    });
-
-  test('fromBlob2', () {
-      var b1 = new Blob(['x']);
-      var b2 = new Blob([b1, b1]);
-      expect(b1.size, 1);
-      expect(b2.size, 2);
-    });
-
-  test('fromArrayBuffer', () {
-      var a = new Uint8Array(100).buffer; // i.e. new ArrayBuffer(100);
-      var b = new Blob([a, a]);
-      expect(b.size, 200);
-    });
-}