Add dummy dart:html library for documentation.

lib/html/doc/interface/SVGTransform.dartdoc

Index: lib/html/doc/interface/SVGTransform.dartdoc
diff --git a/lib/html/doc/interface/SVGTransform.dartdoc b/lib/html/doc/interface/SVGTransform.dartdoc
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+// 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 SVGTransform
+interface SVGTransform {
+
+  static final int SVG_TRANSFORM_MATRIX = 1;
+
+  static final int SVG_TRANSFORM_ROTATE = 4;
+
+  static final int SVG_TRANSFORM_SCALE = 3;
+
+  static final int SVG_TRANSFORM_SKEWX = 5;
+
+  static final int SVG_TRANSFORM_SKEWY = 6;
+
+  static final int SVG_TRANSFORM_TRANSLATE = 2;
+
+  static final int SVG_TRANSFORM_UNKNOWN = 0;
+
+  /** @domName SVGTransform.angle */
+  final num angle;
+
+  /** @domName SVGTransform.matrix */
+  final SVGMatrix matrix;
+
+  /** @domName SVGTransform.type */
+  final int type;
+
+  /** @domName SVGTransform.setMatrix */
+  void setMatrix(SVGMatrix matrix);
+
+  /** @domName SVGTransform.setRotate */
+  void setRotate(num angle, num cx, num cy);
+
+  /** @domName SVGTransform.setScale */
+  void setScale(num sx, num sy);
+
+  /** @domName SVGTransform.setSkewX */
+  void setSkewX(num angle);
+
+  /** @domName SVGTransform.setSkewY */
+  void setSkewY(num angle);
+
+  /** @domName SVGTransform.setTranslate */
+  void setTranslate(num tx, num ty);
+}