Move incremental scanner to separate file

pkg/analyzer/test/generated/test_all.dart

Index: pkg/analyzer/test/generated/test_all.dart
diff --git a/pkg/analyzer/test/generated/test_all.dart b/pkg/analyzer/test/generated/test_all.dart
index 420e4d27bf7e0a4eb5b80632288f9c722d093161..5c33174efcd192451fafe521afd5ac10fa218ce6 100644
--- a/pkg/analyzer/test/generated/test_all.dart
+++ b/pkg/analyzer/test/generated/test_all.dart
@@ -12,6 +12,7 @@ import 'compile_time_error_code_test.dart' as compile_time_error_code_test;
 import 'element_test.dart' as element_test;
 import 'engine_test.dart' as engine_test;
 import 'incremental_resolver_test.dart' as incremental_resolver_test;
+import 'incremental_scanner_test.dart' as incremental_scanner_test;
 import 'java_core_test.dart' as java_core_test;
 import 'java_io_test.dart' as java_io_test;
 import 'non_error_resolver_test.dart' as non_error_resolver_test;
@@ -32,6 +33,7 @@ main() {
     element_test.main();
     engine_test.main();
     incremental_resolver_test.main();
+    incremental_scanner_test.main();
     java_core_test.main();
     java_io_test.main();
     non_error_resolver_test.main();