Handle labelled continue statements

pkg/compiler/lib/src/elements/modelx.dart

Index: pkg/compiler/lib/src/elements/modelx.dart
diff --git a/pkg/compiler/lib/src/elements/modelx.dart b/pkg/compiler/lib/src/elements/modelx.dart
index 981b763f44c5ff9b955b4cf4cb0090385dce5892..8ff0fba139b9761b56258387fb4c520d302638fc 100644
--- a/pkg/compiler/lib/src/elements/modelx.dart
+++ b/pkg/compiler/lib/src/elements/modelx.dart
@@ -3413,17 +3413,22 @@ class JumpTargetX extends JumpTarget<Node> {
   MemberElement get memberContext => executableContext.memberContext;
 
   LabelDefinition<Node> addLabel(Label label, String labelName,
-      {bool isBreakTarget: false}) {
+      {bool isBreakTarget: false, bool isContinueTarget: false}) {
     LabelDefinitionX result = new LabelDefinitionX(label, labelName, this);
     labels.add(result);
     if (isBreakTarget) {
       result.setBreakTarget();
     }
+    if (isContinueTarget) {
+      result.setContinueTarget();
+    }
     return result;
   }
 
   bool get isSwitch => statement is SwitchStatement;
 
+  bool get isSwitchCase => statement is SwitchCase;
+
   String toString() => 'Target:$statement';
 }