Update Try Dart to new scanner behavior.

dart/tests/try/paste_content_rewriting_test.dart

Index: dart/tests/try/paste_content_rewriting_test.dart
diff --git a/dart/tests/try/paste_content_rewriting_test.dart b/dart/tests/try/paste_content_rewriting_test.dart
index 6241885bd888833f94937d84ac2ccc22ce389799..970d6462b69a8abcc8d80284bf7bbb0b8136af8a 100644
--- a/dart/tests/try/paste_content_rewriting_test.dart
+++ b/dart/tests/try/paste_content_rewriting_test.dart
@@ -25,11 +25,11 @@ import '../../pkg/async_helper/lib/async_helper.dart';
 const Map<String, String> tests = const <String, String> {
   '<span><p>//...</p>}</span>': '//...\n}\n',
   'someText': 'someText\n',
-  '"\$"': '"\$"<DIAGNOSTIC>\n',
-  '"\$\$"': '"\$\$<DIAGNOSTIC>"<DIAGNOSTIC>\n',
-  '"\$\$4"': '"\$\$<DIAGNOSTIC>4<DIAGNOSTIC>"\n',
-  '"\$\$4 "': '"\$\$<DIAGNOSTIC>4<DIAGNOSTIC> "\n',
-  '1e': '1<DIAGNOSTIC>e\n',
+  '"\$"': '"\$<DIAGNOSTIC>"\n',
+  '"\$\$"': '"\$<DIAGNOSTIC>\$<DIAGNOSTIC>"\n',
+  '"\$\$4"': '"\$<DIAGNOSTIC>\$<DIAGNOSTIC>4"\n',
+  '"\$\$4 "': '"\$<DIAGNOSTIC>\$<DIAGNOSTIC>4 "\n',
+  '1e': '1e<DIAGNOSTIC>\n',
 };
 
 List<Node> queryDiagnosticNodes() {