Lots of little changes for dartdoc/apidoc.

utils/apidoc/html_diff.dart

Index: utils/apidoc/html_diff.dart
diff --git a/utils/apidoc/html_diff.dart b/utils/apidoc/html_diff.dart
index 3bda2ccf147c12cdc56736f299af800ce44a6adb..9c3d2eef6039699425408ae44e420e5d963dfc0f 100644
--- a/utils/apidoc/html_diff.dart
+++ b/utils/apidoc/html_diff.dart
@@ -8,26 +8,29 @@
  */
 library html_diff;
 
-import 'dart:io';
 import 'dart:async';
-import '../../sdk/lib/html/html_common/metadata.dart';
+import 'dart:io';
+
 import 'lib/metadata.dart';
 
 // TODO(rnystrom): Use "package:" URL (#4968).
-import '../../sdk/lib/_internal/dartdoc/lib/dartdoc.dart';
+import '../../sdk/lib/_internal/compiler/implementation/mirrors/dart2js_mirror.dart';
 import '../../sdk/lib/_internal/compiler/implementation/mirrors/mirrors.dart';
 import '../../sdk/lib/_internal/compiler/implementation/mirrors/mirrors_util.dart';
-import '../../sdk/lib/_internal/compiler/implementation/mirrors/dart2js_mirror.dart';
+import '../../sdk/lib/_internal/dartdoc/lib/dartdoc.dart';
+import '../../sdk/lib/html/html_common/metadata.dart';
 
 // TODO(amouravski): There is currently magic that looks at dart:* libraries
 // rather than the declared library names. This changed due to recent syntax
 // changes. We should only need to look at the library 'html'.
 const List<String> HTML_LIBRARY_NAMES = const [
     'dart:html',
+    'dart:indexed_db',
     'dart:svg',
     'dart:web_audio'];
 const List<String> HTML_DECLARED_NAMES = const [
     'dart.dom.html',
+    'dart.dom.indexed_db',
     'dart.dom.svg',
     'dart.dom.web_audio'];