Removed some cruft from 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 c9aaf84bbf57b288f57252b19d49aac76d49ef83..d6a5067cf421fb49336f6284ebf5107efae35fd5 100644
--- a/utils/apidoc/html_diff.dart
+++ b/utils/apidoc/html_diff.dart
@@ -156,8 +156,8 @@ class HtmlDiff {
     final domNameMetadata = findMetadata(htmlType.metadata, 'DomName');
     if (domNameMetadata != null) {
       var domNames = <String>[];
-      var tags = deprecatedFutureValue(domNameMetadata.getField('name'));
-      for (var s in tags.reflectee.split(',')) {
+      var names = deprecatedFutureValue(domNameMetadata.getField('name'));
+      for (var s in names.reflectee.split(',')) {
         domNames.add(s.trim());
       }
 
@@ -180,8 +180,8 @@ class HtmlDiff {
     final domNameMetadata = findMetadata(htmlMember.metadata, 'DomName');
     if (domNameMetadata != null) {
       var domNames = <String>[];
-      var tags = deprecatedFutureValue(domNameMetadata.getField('name'));
-      for (var s in tags.reflectee.split(',')) {
+      var names = deprecatedFutureValue(domNameMetadata.getField('name'));
+      for (var s in names.reflectee.split(',')) {
         domNames.add(s.trim());
       }