[debugger] simplify reloc info for debug break slots.

src/mips64/assembler-mips64.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 1028 matching lines @@
 
     DISALLOW_IMPLICIT_CONSTRUCTORS(BlockGrowBufferScope);
   };
 
   // Debugging.
 
   // 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 AST id of the CallIC being compiled, so that it can be placed
   // in the relocation information.
   void SetRecordedAstId(TypeFeedbackId ast_id) {
     DCHECK(recorded_ast_id_.IsNone());
     recorded_ast_id_ = ast_id;
   }
 
   TypeFeedbackId RecordedAstId() {
     DCHECK(!recorded_ast_id_.IsNone());
@@ skipping 386 matching lines @@
  public:
   explicit EnsureSpace(Assembler* assembler) {
     assembler->CheckBuffer();
   }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ARM_ASSEMBLER_MIPS_H_