Debugging in kernel shaping up.

runtime/vm/kernel.h

Index: runtime/vm/kernel.h
diff --git a/runtime/vm/kernel.h b/runtime/vm/kernel.h
index ebdac48dc470631c545f8881b55b8fe90ea1ce73..b3450f6f8f850bf37ab791a211fbd1ed7912a299 100644
--- a/runtime/vm/kernel.h
+++ b/runtime/vm/kernel.h
@@ -9,6 +9,7 @@
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/globals.h"
+#include "vm/growable_array.h"
 #include "vm/token_position.h"
 
 
@@ -2727,6 +2728,8 @@ class Program : public TreeNode {
   SourceTable& source_table() { return source_table_; }
   List<Library>& libraries() { return libraries_; }
   Procedure* main_method() { return main_method_; }
+  MallocGrowableArray<MallocGrowableArray<intptr_t>*> valid_token_positions;
+  MallocGrowableArray<MallocGrowableArray<intptr_t>*> yield_token_positions;
 
  private:
   Program() {}