Add dummy dart:html library for documentation.

lib/html/doc/interface/SVGFEBlendElement.dartdoc

Index: lib/html/doc/interface/SVGFEBlendElement.dartdoc
diff --git a/lib/html/doc/interface/SVGFEBlendElement.dartdoc b/lib/html/doc/interface/SVGFEBlendElement.dartdoc
new file mode 100644
index 0000000000000000000000000000000000000000..deb5f0543aad259e02b0a4ad4de0ff060914ca47
--- /dev/null
+++ b/lib/html/doc/interface/SVGFEBlendElement.dartdoc
@@ -0,0 +1,32 @@
+// 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 SVGFEBlendElement
+interface SVGFEBlendElement extends SVGElement, SVGFilterPrimitiveStandardAttributes {
+
+  static final int SVG_FEBLEND_MODE_DARKEN = 4;
+
+  static final int SVG_FEBLEND_MODE_LIGHTEN = 5;
+
+  static final int SVG_FEBLEND_MODE_MULTIPLY = 2;
+
+  static final int SVG_FEBLEND_MODE_NORMAL = 1;
+
+  static final int SVG_FEBLEND_MODE_SCREEN = 3;
+
+  static final int SVG_FEBLEND_MODE_UNKNOWN = 0;
+
+  /** @domName SVGFEBlendElement.in1 */
+  final SVGAnimatedString in1;
+
+  /** @domName SVGFEBlendElement.in2 */
+  final SVGAnimatedString in2;
+
+  /** @domName SVGFEBlendElement.mode */
+  final SVGAnimatedEnumeration mode;
+}