Handle labelled continue statements

pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart

Index: pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
diff --git a/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart b/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
index c6e14f3103591995b0212630b497131d962ae64c..7f3458d79edb90b1dee5239f95575844aa711c3f 100644
--- a/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
+++ b/pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart
@@ -557,12 +557,15 @@ class KernelJumpTarget implements JumpTargetX {
 
   @override
   LabelDefinition<ast.Node> addLabel(ast.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;
   }
 
@@ -575,6 +578,8 @@ class KernelJumpTarget implements JumpTargetX {
   @override
   bool get isSwitch => targetStatement is ir.SwitchStatement;
 
+  bool get isSwitchCase => targetStatement is ir.SwitchCase;
+
   @override
   bool get isTarget => isBreakTarget || isContinueTarget;