Copy resources refered to in the HTML to the output folder

lib/src/codegen/html_codegen.dart

 // Copyright (c) 2015, 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.
 
 library dev_compiler.src.codegen.html_codegen;
 
 import 'package:html5lib/dom.dart';
 import 'package:html5lib/parser.dart' show parseFragment;
 import 'package:logging/logging.dart' show Logger;
 import 'package:path/path.dart' as path;
@@ skipping 34 matching lines @@
   var libraries = [];
   var resources = [];
   visitInPostOrder(root, (n) {
     if (n is DartSourceNode) libraries.add(n);
     if (n is ResourceSourceNode) resources.add(n);
   }, includeParts: false);
 
   String mainLibraryName;
   var fragment = new DocumentFragment();
   for (var resource in resources) {
-    var resourcePath = resourceOutputPath(resource.uri);
+    var resourcePath = resourceOutputPath(resource.uri, root.uri);
     if (resource.cachingHash != null) {
       resourcePath = _addHash(resourcePath, resource.cachingHash);
     }
     if (path.extension(resourcePath) == '.css') {
       fragment.nodes.add(_cssInclude(resourcePath));
     } else {
       fragment.nodes.add(_libraryInclude(resourcePath));
     }
   }
   if (!options.checkSdk) fragment.nodes.add(_miniMockSdk);
@@ skipping 38 matching lines @@
 /// A script tag with a tiny mock of the core SDK. This is just used for testing
 /// some small samples.
 // TODO(sigmund,jmesserly): remove.
 Node get _miniMockSdk => parseFragment('''
 <script>
   /* placehorder for unimplemented code libraries */
   var math = Math;
   var core = { int: { parse: Number }, print: e => console.log(e) };
 </script>''');
 final _log = new Logger('dev_compiler.src.codegen.html_codegen');