X87: [debugger] simplify reloc info for debug break slots.

src/debug/x87/debug-x87.cc

Index: src/debug/x87/debug-x87.cc
diff --git a/src/debug/x87/debug-x87.cc b/src/debug/x87/debug-x87.cc
index 51610b4632073c119918e25f649e6ffb1e7d9722..3d7b49c80a53a118fdcc3f408961e1a804be8791 100644
--- a/src/debug/x87/debug-x87.cc
+++ b/src/debug/x87/debug-x87.cc
@@ -23,10 +23,9 @@ void EmitDebugBreakSlot(MacroAssembler* masm) {
 }
 
 
-void DebugCodegen::GenerateSlot(MacroAssembler* masm, RelocInfo::Mode mode,
-                                int call_argc) {
+void DebugCodegen::GenerateSlot(MacroAssembler* masm, RelocInfo::Mode mode) {
   // Generate enough nop's to make space for a call instruction.
-  masm->RecordDebugBreakSlot(mode, call_argc);
+  masm->RecordDebugBreakSlot(mode);
   EmitDebugBreakSlot(masm);
 }