Correctify instanceof and make it optimizable.

src/ia32/macro-assembler-ia32.h

Index: src/ia32/macro-assembler-ia32.h
diff --git a/src/ia32/macro-assembler-ia32.h b/src/ia32/macro-assembler-ia32.h
index b228ef9a2850e272487fbe4355941dbf4c769d57..0ac5f4f63347796dfeea31151dee49e134e1c33a 100644
--- a/src/ia32/macro-assembler-ia32.h
+++ b/src/ia32/macro-assembler-ia32.h
@@ -728,11 +728,8 @@ class MacroAssembler: public Assembler {
   // function and jumps to the miss label if the fast checks fail. The
   // function register will be untouched; the other registers may be
   // clobbered.
-  void TryGetFunctionPrototype(Register function,
-                               Register result,
-                               Register scratch,
-                               Label* miss,
-                               bool miss_on_bound_function = false);
+  void TryGetFunctionPrototype(Register function, Register result,
+                               Register scratch, Label* miss);
 
   // Picks out an array index from the hash field.
   // Register use: