[interpreter, debugger] support debug breaks via bytecode array copy

src/interpreter/bytecode-array-builder.h

Index: src/interpreter/bytecode-array-builder.h
diff --git a/src/interpreter/bytecode-array-builder.h b/src/interpreter/bytecode-array-builder.h
index 9cd44212ca2f8513b6015299a1ebeea0697a429e..fe693371845c3f56c12d10e37a37debe1552aad3 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -257,7 +257,6 @@ class BytecodeArrayBuilder final : public ZoneObject, private RegisterMover {
   // entry, so that it can be referenced by above exception handling support.
   int NewHandlerEntry() { return handler_table_builder()->NewHandlerEntry(); }
 
-  void SetReturnPosition(FunctionLiteral* fun);
   void SetStatementPosition(Statement* stmt);
   void SetExpressionPosition(Expression* expr);
 
@@ -335,6 +334,9 @@ class BytecodeArrayBuilder final : public ZoneObject, private RegisterMover {
   bool NeedToBooleanCast();
   bool IsRegisterInAccumulator(Register reg);
 
+  // Set position for implicit return.
+  void SetReturnPosition(FunctionLiteral* fun);
+
   // Gets a constant pool entry for the |object|.
   size_t GetConstantPoolEntry(Handle<Object> object);