[kernel] Make fasta call a new constructor on FallThroughError

pkg/kernel/lib/core_types.dart

Index: pkg/kernel/lib/core_types.dart
diff --git a/pkg/kernel/lib/core_types.dart b/pkg/kernel/lib/core_types.dart
index 70630430c7e1cff42a7c4143019f2b11de651fca..84bf835bd458230d0fa67658a32e217b599477b8 100644
--- a/pkg/kernel/lib/core_types.dart
+++ b/pkg/kernel/lib/core_types.dart
@@ -26,6 +26,7 @@ class CoreTypes {
       'Function',
       'Invocation',
       '_ConstantExpressionError',
+      'FallThroughError',
     ],
     'dart:_internal': [
       'Symbol',
@@ -63,6 +64,7 @@ class CoreTypes {
   Procedure _printProcedure;
   Procedure _identicalProcedure;
   Constructor _constantExpressionErrorDefaultConstructor;
+  Constructor _fallThroughErrorUrlAndLineConstructor;
   Constructor _compileTimeErrorDefaultConstructor;
 
   Class _internalSymbolClass;
@@ -264,6 +266,11 @@ class CoreTypes {
         _index.getMember('dart:core', '_ConstantExpressionError', '');
   }
 
+  Constructor get fallThroughErrorUrlAndLineConstructor {
+    return _fallThroughErrorUrlAndLineConstructor ??=
+        _index.getMember('dart:core', 'FallThroughError', '_create');
+  }
+
   Constructor get compileTimeErrorDefaultConstructor {
     return _compileTimeErrorDefaultConstructor ??=
         _index.getMember('dart:core', '_CompileTimeError', '');