Remove override mode from BinaryOpStub

src/full-codegen.h

Index: src/full-codegen.h
diff --git a/src/full-codegen.h b/src/full-codegen.h
index 5580cb3e86cf57f01de083945fb41ada15be5b01..17aec8fd4ff98a223bd8d4c5745c56473406ff59 100644
--- a/src/full-codegen.h
+++ b/src/full-codegen.h
@@ -599,14 +599,12 @@ class FullCodeGenerator: public AstVisitor {
   // Apply the compound assignment operator. Expects the left operand on top
   // of the stack and the right one in the accumulator.
   void EmitBinaryOp(BinaryOperation* expr,
-                    Token::Value op,
-                    OverwriteMode mode);
+                    Token::Value op);
 
   // Helper functions for generating inlined smi code for certain
   // binary operations.
   void EmitInlineSmiBinaryOp(BinaryOperation* expr,
                              Token::Value op,
-                             OverwriteMode mode,
                              Expression* left,
                              Expression* right);