Add dummy dart:html library for documentation.

lib/html/doc/interface/CSSPrimitiveValue.dartdoc

Index: lib/html/doc/interface/CSSPrimitiveValue.dartdoc
diff --git a/lib/html/doc/interface/CSSPrimitiveValue.dartdoc b/lib/html/doc/interface/CSSPrimitiveValue.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 CSSPrimitiveValue
+interface CSSPrimitiveValue extends CSSValue {
+
+  static final int CSS_ATTR = 22;
+
+  static final int CSS_CM = 6;
+
+  static final int CSS_COUNTER = 23;
+
+  static final int CSS_DEG = 11;
+
+  static final int CSS_DIMENSION = 18;
+
+  static final int CSS_EMS = 3;
+
+  static final int CSS_EXS = 4;
+
+  static final int CSS_GRAD = 13;
+
+  static final int CSS_HZ = 16;
+
+  static final int CSS_IDENT = 21;
+
+  static final int CSS_IN = 8;
+
+  static final int CSS_KHZ = 17;
+
+  static final int CSS_MM = 7;
+
+  static final int CSS_MS = 14;
+
+  static final int CSS_NUMBER = 1;
+
+  static final int CSS_PC = 10;
+
+  static final int CSS_PERCENTAGE = 2;
+
+  static final int CSS_PT = 9;
+
+  static final int CSS_PX = 5;
+
+  static final int CSS_RAD = 12;
+
+  static final int CSS_RECT = 24;
+
+  static final int CSS_RGBCOLOR = 25;
+
+  static final int CSS_S = 15;
+
+  static final int CSS_STRING = 19;
+
+  static final int CSS_UNKNOWN = 0;
+
+  static final int CSS_URI = 20;
+
+  static final int CSS_VH = 27;
+
+  static final int CSS_VMIN = 28;
+
+  static final int CSS_VW = 26;
+
+  /** @domName CSSPrimitiveValue.primitiveType */
+  final int primitiveType;
+
+  /** @domName CSSPrimitiveValue.getCounterValue */
+  Counter getCounterValue();
+
+  /** @domName CSSPrimitiveValue.getFloatValue */
+  num getFloatValue(int unitType);
+
+  /** @domName CSSPrimitiveValue.getRGBColorValue */
+  RGBColor getRGBColorValue();
+
+  /** @domName CSSPrimitiveValue.getRectValue */
+  Rect getRectValue();
+
+  /** @domName CSSPrimitiveValue.getStringValue */
+  String getStringValue();
+
+  /** @domName CSSPrimitiveValue.setFloatValue */
+  void setFloatValue(int unitType, num floatValue);
+
+  /** @domName CSSPrimitiveValue.setStringValue */
+  void setStringValue(int stringType, String stringValue);
+}