Create fewer unnecessary lists

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

Index: pkg/analyzer/lib/src/generated/html.dart
diff --git a/pkg/analyzer/lib/src/generated/html.dart b/pkg/analyzer/lib/src/generated/html.dart
index 43f84ab73710b31245a5d0f2a67617a40a87186d..956a2da025a25b142090dee8fe046bc9530f5ba9 100644
--- a/pkg/analyzer/lib/src/generated/html.dart
+++ b/pkg/analyzer/lib/src/generated/html.dart
@@ -23,7 +23,7 @@ import 'engine.dart' show AnalysisEngine, AngularHtmlUnitResolver, ExpressionVis
  * required to implement the interface used to access the characters being scanned.
  */
 abstract class AbstractScanner {
-  static List<String> _NO_PASS_THROUGH_ELEMENTS = <String> [];
+  static List<String> _NO_PASS_THROUGH_ELEMENTS = <String>[];
 
   /**
    * The source being scanned.
@@ -1196,6 +1196,11 @@ class XmlAttributeNode extends XmlNode {
   List<XmlExpression> expressions = XmlExpression.EMPTY_ARRAY;
 
   /**
+   * An empty list of XML attribute nodes.
+   */
+  static const List<XmlAttributeNode> EMPTY_LIST = const <XmlAttributeNode>[];
+
+  /**
    * Construct a new instance representing an XML attribute.
    *
    * @param name the name token (not `null`). This may be a zero length token if the attribute