[interpreter] Implement handling of try-finally constructs.

src/interpreter/bytecode-generator.h

Index: src/interpreter/bytecode-generator.h
diff --git a/src/interpreter/bytecode-generator.h b/src/interpreter/bytecode-generator.h
index d07b42391584c59dfa2f5e9641b287107eae2f29..8f8aab8b281314dcb7ceb4bdfdcb801214e99db6 100644
--- a/src/interpreter/bytecode-generator.h
+++ b/src/interpreter/bytecode-generator.h
@@ -32,6 +32,9 @@ class BytecodeGenerator final : public AstVisitor {
   class ControlScope;
   class ControlScopeForBreakable;
   class ControlScopeForIteration;
+  class ControlScopeForTopLevel;
+  class ControlScopeForTryCatch;
+  class ControlScopeForTryFinally;
   class ExpressionResultScope;
   class EffectResultScope;
   class AccumulatorResultScope;