Adjust context level when required before executing inlined finally clauses.

runtime/vm/flow_graph_builder.h

Index: runtime/vm/flow_graph_builder.h
diff --git a/runtime/vm/flow_graph_builder.h b/runtime/vm/flow_graph_builder.h
index 4c127f175d0227e904e034da7841644413f6e091..2115065268b4752b48602321e1a317f2f0806196 100644
--- a/runtime/vm/flow_graph_builder.h
+++ b/runtime/vm/flow_graph_builder.h
@@ -407,6 +407,10 @@ class EffectGraphVisitor : public AstNodeVisitor {
   // Moves the nth parent context into the context register.
   void UnchainContexts(intptr_t n);
 
+  // Unchain the current context until its level matches the context level
+  // expected on entry at the target specified by its scope.
+  void AdjustContextLevel(LocalScope* target_scope);
+
   void CloseFragment() { exit_ = NULL; }
 
   // Returns a local variable index for a temporary local that is