[debugger] simplify reloc info for debug break slots.

src/arm64/assembler-arm64.h

 // 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.
 
 #ifndef V8_ARM64_ASSEMBLER_ARM64_H_
 #define V8_ARM64_ASSEMBLER_ARM64_H_
 
 #include <deque>
 #include <list>
 #include <map>
@@ skipping 915 matching lines @@
   // Record a deoptimization reason that can be used by a log or cpu profiler.
   // Use --trace-deopt to enable.
   void RecordDeoptReason(const int reason, const SourcePosition position);
 
   int buffer_space() const;
 
   // Mark generator continuation.
   void RecordGeneratorContinuation();
 
   // Mark address of a debug break slot.
-  void RecordDebugBreakSlot(RelocInfo::Mode mode, int argc = 0);
+  void RecordDebugBreakSlot(RelocInfo::Mode mode);
 
   // Record the emission of a constant pool.
   //
   // The emission of constant and veneer pools depends on the size of the code
   // generated and the number of RelocInfo recorded.
   // The Debug mechanism needs to map code offsets between two versions of a
   // function, compiled with and without debugger support (see for example
   // Debug::PrepareForBreakPoints()).
   // Compiling functions with debugger support generates additional code
   // (DebugCodegen::GenerateSlot()). This may affect the emission of the pools
@@ skipping 1238 matching lines @@
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBufferSpace();
   }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ARM64_ASSEMBLER_ARM64_H_