[debugger] simplify reloc info for debug break slots.

src/debug/arm64/debug-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/arm64/frames-arm64.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 
 namespace v8 {
 namespace internal {
 
 #define __ ACCESS_MASM(masm)
 
 
 void EmitDebugBreakSlot(Assembler* masm) {
   Label check_size;
   __ bind(&check_size);
   for (int i = 0; i < Assembler::kDebugBreakSlotInstructions; i++) {
     __ nop(Assembler::DEBUG_BREAK_NOP);
   }
   DCHECK_EQ(Assembler::kDebugBreakSlotInstructions,
             static_cast<int>(masm->InstructionsGeneratedSince(&check_size)));
 }
 
 
-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. Avoid emitting
   // the constant pool in the debug break slot code.
   InstructionAccurateScope scope(masm, Assembler::kDebugBreakSlotInstructions);
-  masm->RecordDebugBreakSlot(mode, call_argc);
+  masm->RecordDebugBreakSlot(mode);
   EmitDebugBreakSlot(masm);
 }
 
 
 void DebugCodegen::ClearDebugBreakSlot(Isolate* isolate, Address pc) {
   PatchingAssembler patcher(isolate, reinterpret_cast<Instruction*>(pc),
                             Assembler::kDebugBreakSlotInstructions);
   EmitDebugBreakSlot(&patcher);
 }
 
@@ skipping 114 matching lines @@
   __ Br(scratch);
 }
 
 
 const bool LiveEdit::kFrameDropperSupported = true;
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64