Revert "improve fasta unterminated string recovery"

pkg/front_end/test/scanner_replacement_test.dart

Index: pkg/front_end/test/scanner_replacement_test.dart
diff --git a/pkg/front_end/test/scanner_replacement_test.dart b/pkg/front_end/test/scanner_replacement_test.dart
index bb1e50503c769c1856c1bbe95962af95fd397734..b0e39cb4df7d592945fbff5b2e652b76eba304f7 100644
--- a/pkg/front_end/test/scanner_replacement_test.dart
+++ b/pkg/front_end/test/scanner_replacement_test.dart
@@ -192,6 +192,13 @@ class ScannerTest_Replacement extends ScannerTestBase {
 
   @override
   @failingTest
+  void test_string_multi_unterminated() {
+    // See defaultRecoveryStrategy recoverString
+    super.test_string_multi_unterminated();
+  }
+
+  @override
+  @failingTest
   void test_string_multi_unterminated_interpolation_block() {
     // See defaultRecoveryStrategy recoverString
     super.test_string_multi_unterminated_interpolation_block();
@@ -206,6 +213,27 @@ class ScannerTest_Replacement extends ScannerTestBase {
 
   @override
   @failingTest
+  void test_string_raw_multi_unterminated() {
+    // See defaultRecoveryStrategy recoverString
+    super.test_string_raw_multi_unterminated();
+  }
+
+  @override
+  @failingTest
+  void test_string_raw_simple_unterminated_eof() {
+    // See defaultRecoveryStrategy recoverString
+    super.test_string_raw_simple_unterminated_eof();
+  }
+
+  @override
+  @failingTest
+  void test_string_raw_simple_unterminated_eol() {
+    // See defaultRecoveryStrategy recoverString
+    super.test_string_raw_simple_unterminated_eol();
+  }
+
+  @override
+  @failingTest
   void test_string_simple_interpolation_missingIdentifier() {
     // See defaultRecoveryStrategy recoverStringInterpolation
     super.test_string_simple_interpolation_missingIdentifier();
@@ -220,6 +248,20 @@ class ScannerTest_Replacement extends ScannerTestBase {
 
   @override
   @failingTest
+  void test_string_simple_unterminated_eof() {
+    // See defaultRecoveryStrategy recoverString
+    super.test_string_simple_unterminated_eof();
+  }
+
+  @override
+  @failingTest
+  void test_string_simple_unterminated_eol() {
+    // See defaultRecoveryStrategy recoverString
+    super.test_string_simple_unterminated_eol();
+  }
+
+  @override
+  @failingTest
   void test_string_simple_unterminated_interpolation_block() {
     // See defaultRecoveryStrategy recoverString
     super.test_string_simple_unterminated_interpolation_block();