Add dummy dart:html library for documentation.

lib/html/doc/interface/DataView.dartdoc

+// 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.
+
+// WARNING:
+//   This file contains documentation that is merged into the real source.
+//   Do not make code changes here.
+
+/// @domName DataView
+interface DataView extends ArrayBufferView {
+
+  /** @domName DataView.getFloat32 */
+  num getFloat32(int byteOffset, [bool littleEndian]);
+
+  /** @domName DataView.getFloat64 */
+  num getFloat64(int byteOffset, [bool littleEndian]);
+
+  /** @domName DataView.getInt16 */
+  int getInt16(int byteOffset, [bool littleEndian]);
+
+  /** @domName DataView.getInt32 */
+  int getInt32(int byteOffset, [bool littleEndian]);
+
+  /** @domName DataView.getInt8 */
+  Object getInt8();
+
+  /** @domName DataView.getUint16 */
+  int getUint16(int byteOffset, [bool littleEndian]);
+
+  /** @domName DataView.getUint32 */
+  int getUint32(int byteOffset, [bool littleEndian]);
+
+  /** @domName DataView.getUint8 */
+  Object getUint8();
+
+  /** @domName DataView.setFloat32 */
+  void setFloat32(int byteOffset, num value, [bool littleEndian]);
+
+  /** @domName DataView.setFloat64 */
+  void setFloat64(int byteOffset, num value, [bool littleEndian]);
+
+  /** @domName DataView.setInt16 */
+  void setInt16(int byteOffset, int value, [bool littleEndian]);
+
+  /** @domName DataView.setInt32 */
+  void setInt32(int byteOffset, int value, [bool littleEndian]);
+
+  /** @domName DataView.setInt8 */
+  void setInt8();
+
+  /** @domName DataView.setUint16 */
+  void setUint16(int byteOffset, int value, [bool littleEndian]);
+
+  /** @domName DataView.setUint32 */
+  void setUint32(int byteOffset, int value, [bool littleEndian]);
+
+  /** @domName DataView.setUint8 */
+  void setUint8();
+}