Add dummy dart:html library for documentation.

lib/html/doc/interface/SVGAnimatedInteger.dartdoc

Index: lib/html/doc/interface/SVGAnimatedInteger.dartdoc
diff --git a/lib/html/doc/interface/SVGAnimatedInteger.dartdoc b/lib/html/doc/interface/SVGAnimatedInteger.dartdoc
new file mode 100644
index 0000000000000000000000000000000000000000..e5fffc1eddf854dfe87e9d894ba459e4abcb19dd
--- /dev/null
+++ b/lib/html/doc/interface/SVGAnimatedInteger.dartdoc
@@ -0,0 +1,17 @@
+// 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 SVGAnimatedInteger
+interface SVGAnimatedInteger {
+
+  /** @domName SVGAnimatedInteger.animVal */
+  final int animVal;
+
+  /** @domName SVGAnimatedInteger.baseVal */
+  int baseVal;
+}