Refactoring to prepare for kernel based jump targets

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

Index: pkg/compiler/lib/src/elements/jumps.dart
diff --git a/pkg/compiler/lib/src/elements/jumps.dart b/pkg/compiler/lib/src/elements/jumps.dart
index 84805d2773e997825e0613bc0e3c400f3102bd18..4fc92358176900b6806cea1ed6e15e71b6d32170 100644
--- a/pkg/compiler/lib/src/elements/jumps.dart
+++ b/pkg/compiler/lib/src/elements/jumps.dart
@@ -15,9 +15,6 @@ abstract class LabelDefinition<T> extends Entity {
   bool get isTarget;
   bool get isBreakTarget;
   bool get isContinueTarget;
-
-  void setBreakTarget();
-  void setContinueTarget();
 }
 
 /// A jump target is the reference point of a statement or switch-case,
@@ -32,9 +29,6 @@ abstract class JumpTarget<T> extends Local {
   bool get isContinueTarget;
   bool get isSwitch;
 
-  // TODO(kasperl): Try to get rid of these.
-  void set isBreakTarget(bool value);
-  void set isContinueTarget(bool value);
-
-  LabelDefinition<T> addLabel(covariant T label, String labelName);
+  LabelDefinition<T> addLabel(covariant T label, String labelName,
+      {bool isBreakTarget: false});
 }