[Interpreter] Add support for for..in.

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 2d730feeefa32f0893a475d859214a58363d63c7..9883429b96584bebfadefeab386c6dc8a4e411ae 100644
--- a/src/interpreter/bytecode-generator.h
+++ b/src/interpreter/bytecode-generator.h
@@ -77,6 +77,7 @@ class BytecodeGenerator : public AstVisitor {
   void VisitObjectLiteralAccessor(Register home_object,
                                   ObjectLiteralProperty* property,
                                   Register value_out);
+  void VisitForInAssignment(Expression* expr, FeedbackVectorSlot slot);
 
 
   // Visitors for obtaining expression result in the accumulator, in a