[regexp] Remove remainder of native RegExpExecStub

src/regexp/x87/regexp-macro-assembler-x87.cc

Index: src/regexp/x87/regexp-macro-assembler-x87.cc
diff --git a/src/regexp/x87/regexp-macro-assembler-x87.cc b/src/regexp/x87/regexp-macro-assembler-x87.cc
index 4a1c3a889a297cf7f644365c25847ba9a954f83e..4b10e8ca09877821805d0b96c1585bb28ecbfeb4 100644
--- a/src/regexp/x87/regexp-macro-assembler-x87.cc
+++ b/src/regexp/x87/regexp-macro-assembler-x87.cc
@@ -65,13 +65,15 @@ namespace internal {
  * The data up to the return address must be placed there by the calling
  * code, by calling the code entry as cast to a function with the signature:
  * int (*match)(String* input_string,
+ * int (*match)(String* input_string,
  *              int start_index,
  *              Address start,
  *              Address end,
  *              int* capture_output_array,
- *              bool at_start,
+ *              int num_capture_registers,
  *              byte* stack_area_base,
- *              bool direct_call)
+ *              bool direct_call = false,
+ *              Isolate* isolate);
  */
 
 #define __ ACCESS_MASM(masm_)