Migrate to package:html

lib/src/dependency_graph.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.
 
 /// Tracks the shape of the import/export graph and dependencies between files.
 library dev_compiler.src.dependency_graph;
 
 import 'dart:collection' show HashSet;
 
 import 'package:analyzer/analyzer.dart' show parseDirectives;
 import 'package:analyzer/src/generated/ast.dart'
     show
         AstNode,
         CompilationUnit,
         ExportDirective,
         Identifier,
         ImportDirective,
         LibraryDirective,
         PartDirective,
         PartOfDirective;
 import 'package:analyzer/src/generated/engine.dart'
     show ParseDartTask, AnalysisContext;
 import 'package:analyzer/src/generated/source.dart' show Source, SourceKind;
-import 'package:html5lib/dom.dart' show Document, Node;
-import 'package:html5lib/parser.dart' as html;
+import 'package:html/dom.dart' show Document, Node;
+import 'package:html/parser.dart' as html;
 import 'package:logging/logging.dart' show Logger, Level;
 import 'package:path/path.dart' as path;
 import 'package:source_span/source_span.dart' show SourceSpan;
 
 import 'info.dart';
 import 'options.dart';
 import 'report.dart';
 import 'utils.dart';
 
 /// Holds references to all source nodes in the import graph. This is mainly
@@ skipping 431 matching lines @@
   'dart_runtime.js',
   'dart/core.js',
   'dart/math.js'
 ];
 
 /// Runtime files added to applications when running in server mode.
 final runtimeFilesForServerMode = new List<String>.from(defaultRuntimeFiles)
   ..addAll(const ['messages_widget.js', 'messages.css']);
 
 final _log = new Logger('dev_compiler.dependency_graph');