Remove lib/dom directory!

lib/dom/templates/html/impl/impl_Document.darttemplate

-// 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.
-
-class $CLASSNAME extends _NodeImpl implements Document
-$if DART2JS
-    native "*HTMLDocument"
-$endif
-{
-
-$!MEMBERS
-  // TODO(jacobr): implement all Element methods not on Document. 
-
-  _ElementImpl query(String selectors) {
-    // It is fine for our RegExp to detect element id query selectors to have
-    // false negatives but not false positives.
-    if (const RegExp("^#[_a-zA-Z]\\w*\$").hasMatch(selectors)) {
-      return $dom_getElementById(selectors.substring(1));
-    }
-    return $dom_querySelector(selectors);
-  }
-
-  List<Element> queryAll(String selectors) {
-    if (const RegExp("""^\\[name=["'][^'"]+['"]\\]\$""").hasMatch(selectors)) {
-      final mutableMatches = $dom_getElementsByName(
-          selectors.substring(7,selectors.length - 2));
-      int len = mutableMatches.length;
-      final copyOfMatches = new List<Element>(len);
-      for (int i = 0; i < len; ++i) {
-        copyOfMatches[i] = mutableMatches[i];
-      }
-      return new _FrozenElementList._wrap(copyOfMatches);
-    } else if (const RegExp("^[*a-zA-Z0-9]+\$").hasMatch(selectors)) {
-      final mutableMatches = $dom_getElementsByTagName(selectors);
-      int len = mutableMatches.length;
-      final copyOfMatches = new List<Element>(len);
-      for (int i = 0; i < len; ++i) {
-        copyOfMatches[i] = mutableMatches[i];
-      }
-      return new _FrozenElementList._wrap(copyOfMatches);
-    } else {
-      return new _FrozenElementList._wrap($dom_querySelectorAll(selectors));
-    }
-  }
-}