Switch on null-aware operators by default in analyzer.

pkg/analyzer/test/generated/scanner_test.dart

Index: pkg/analyzer/test/generated/scanner_test.dart
diff --git a/pkg/analyzer/test/generated/scanner_test.dart b/pkg/analyzer/test/generated/scanner_test.dart
index 24ca20e106a88f1b330065dec79054fe9f9bda06..c1a6603ebdc7edfbac9a3b205de484144224519a 100644
--- a/pkg/analyzer/test/generated/scanner_test.dart
+++ b/pkg/analyzer/test/generated/scanner_test.dart
@@ -170,12 +170,6 @@ class KeywordStateTest {
 
 @reflectiveTest
 class ScannerTest {
-  /**
-   * If non-null, this value is used to override the default value of
-   * [Scanner.enableNullAwareOperators] before scanning.
-   */
-  bool _enableNullAwareOperators;
-
   void fail_incomplete_string_interpolation() {
     // https://code.google.com/p/dart/issues/detail?id=18073
     _assertErrorAndTokens(ScannerErrorCode.UNTERMINATED_STRING_LITERAL, 9,
@@ -727,17 +721,14 @@ class ScannerTest {
   }
 
   void test_question_dot() {
-    _enableNullAwareOperators = true;
     _assertToken(TokenType.QUESTION_PERIOD, "?.");
   }
 
   void test_question_question() {
-    _enableNullAwareOperators = true;
     _assertToken(TokenType.QUESTION_QUESTION, "??");
   }
 
   void test_question_question_eq() {
-    _enableNullAwareOperators = true;
     _assertToken(TokenType.QUESTION_QUESTION_EQ, "??=");
   }
 
@@ -1229,9 +1220,6 @@ class ScannerTest {
   Token _scanWithListener(String source, GatheringErrorListener listener) {
     Scanner scanner =
         new Scanner(null, new CharSequenceReader(source), listener);
-    if (_enableNullAwareOperators != null) {
-      scanner.enableNullAwareOperators = _enableNullAwareOperators;
-    }
     Token result = scanner.tokenize();
     listener.setLineInfo(new TestSource(), scanner.lineStarts);
     return result;