Delete proxy and total samples, which have bit-rotted.

samples/total/client/DomUtils.dart

Index: samples/total/client/DomUtils.dart
===================================================================
--- samples/total/client/DomUtils.dart	(revision 9011)
+++ samples/total/client/DomUtils.dart	(working copy)
@@ -1,29 +0,0 @@
-// Copyright (c) 2011, 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.
-
-/**
- * Utilities for [Element]s.
- */
-class DomUtils {
-  /**
-   * Removes a property on the given element's style.
-   */
-  static void removeStyleProperty(Element elem, String name) {
-    elem.style.removeProperty(name);
-  }
-
-  /**
-   * Sets a property on the given element's style.
-   */
-  static void setStyleProperty(Element elem, String name, String value) {
-    elem.style.setProperty(name, value);
-  }
-
-  /**
-   * Sets an integer property (with optional unit) on the given element's style.
-   */
-  static void setStylePropertyInt(Element elem, String name, int value, [String unit = ""]) {
-    setStyleProperty(elem, name, value.toString() + unit);
-  }
-}