[debugger] simplify reloc info for debug break slots.

src/debug/debug.h

 // Copyright 2012 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_DEBUG_DEBUG_H_
 #define V8_DEBUG_DEBUG_H_
 
 #include "src/allocation.h"
 #include "src/arguments.h"
 #include "src/assembler.h"
@@ skipping 65 matching lines @@
                                     BreakPositionAlignment alignment);
 
   bool IsDebugBreak() const;
 
   inline bool IsReturn() const {
     return RelocInfo::IsDebugBreakSlotAtReturn(rmode_);
   }
   inline bool IsCall() const {
     return RelocInfo::IsDebugBreakSlotAtCall(rmode_);
   }
-  inline bool IsConstructCall() const {
-    return RelocInfo::IsDebugBreakSlotAtConstructCall(rmode_);
-  }
-  inline int CallArgumentsCount() const {
-    DCHECK(IsStepInLocation());
-    return RelocInfo::DebugBreakCallArgumentsCount(data_);
-  }
-
-  bool IsStepInLocation() const;
   inline bool HasBreakPoint() const {
     return debug_info_->HasBreakPoint(pc_offset_);
   }
 
   Handle<Object> BreakPointObjects() const;
 
   void SetBreakPoint(Handle<Object> break_point_object);
   void ClearBreakPoint(Handle<Object> break_point_object);
 
   void SetOneShot();
@@ skipping 663 matching lines @@
 
   static void GeneratePlainReturnLiveEdit(MacroAssembler* masm);
 
   // FrameDropper is a code replacement for a JavaScript frame with possibly
   // several frames above.
   // There is no calling conventions here, because it never actually gets
   // called, it only gets returned to.
   static void GenerateFrameDropperLiveEdit(MacroAssembler* masm);
 
 
-  static void GenerateSlot(MacroAssembler* masm, RelocInfo::Mode mode,
-                           int call_argc = -1);
+  static void GenerateSlot(MacroAssembler* masm, RelocInfo::Mode mode);
 
   static void PatchDebugBreakSlot(Isolate* isolate, Address pc,
                                   Handle<Code> code);
   static void ClearDebugBreakSlot(Isolate* isolate, Address pc);
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_DEBUG_DEBUG_H_