enhance analyzer to parse uppercase and built-in/pseudo keywords

pkg/front_end/test/token_test.dart

Index: pkg/front_end/test/token_test.dart
diff --git a/pkg/front_end/test/token_test.dart b/pkg/front_end/test/token_test.dart
index 6e25376804f64c53530765f38fc829436fd74ae8..3358b81ef288e9f04279e4228cb13472189eddff 100644
--- a/pkg/front_end/test/token_test.dart
+++ b/pkg/front_end/test/token_test.dart
@@ -159,6 +159,14 @@ class Foo {
   List<Keyword> get _allKeywords =>
       new List.from(Keyword.values)..addAll(fasta.Keyword.values);
 
+  void test_all_keywords() {
+    var keywords = new Set<fasta.Keyword>.from(fasta.Keyword.values);
+    for (Keyword kw in Keyword.values) {
+      expect(keywords.remove(kw), isTrue, reason: kw.name);
+    }
+    expect(keywords, isEmpty);
+  }
+
   void test_built_in_keywords() {
     var builtInKeywords = new Set<Keyword>.from([
       Keyword.ABSTRACT,