Begin moving code generation tools from analysis_server to analyzer.

pkg/analyzer/lib/src/codegen/html.dart

 // Copyright (c) 2014, 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.
 
 /**
- * Tools for HTML manipulation.
+ * Tools for manipulating HTML during code generation of analyzer and analysis
+ * server.
  */
-library html.tools;
+library analyzer.src.codegen.html;
 
 import 'package:html/dom.dart' as dom;
 
 /**
  * Make a deep copy of the given HTML nodes.
  */
 List<dom.Node> cloneHtmlNodes(List<dom.Node> nodes) =>
     nodes.map((dom.Node node) => node.clone(true)).toList();
 
 /**
@@ skipping 109 matching lines @@
     _html.add(new dom.Text(text));
   }
 
   /**
    * Output text, ending the current line.
    */
   void writeln([Object obj = '']) {
     write('$obj\n');
   }
 }