CallICStub with a "never patch" approach until customization.

src/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_H_
 #define V8_DEBUG_H_
 
 #include "allocation.h"
 #include "arguments.h"
 #include "assembler.h"
@@ skipping 388 matching lines @@
   Handle<FixedArray> GetLoadedScripts();
 
   // Record function from which eval was called.
   static void RecordEvalCaller(Handle<Script> script);
 
   // Garbage collection notifications.
   void AfterGarbageCollection();
 
   // Code generator routines.
   static void GenerateSlot(MacroAssembler* masm);
+  static void GenerateCallICStubDebugBreak(MacroAssembler* masm);
   static void GenerateLoadICDebugBreak(MacroAssembler* masm);
   static void GenerateStoreICDebugBreak(MacroAssembler* masm);
   static void GenerateKeyedLoadICDebugBreak(MacroAssembler* masm);
   static void GenerateKeyedStoreICDebugBreak(MacroAssembler* masm);
   static void GenerateCompareNilICDebugBreak(MacroAssembler* masm);
   static void GenerateReturnDebugBreak(MacroAssembler* masm);
   static void GenerateCallFunctionStubDebugBreak(MacroAssembler* masm);
-  static void GenerateCallFunctionStubRecordDebugBreak(MacroAssembler* masm);
   static void GenerateCallConstructStubDebugBreak(MacroAssembler* masm);
   static void GenerateCallConstructStubRecordDebugBreak(MacroAssembler* masm);
   static void GenerateSlotDebugBreak(MacroAssembler* masm);
   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);
 
-  // Called from stub-cache.cc.
-  static void GenerateCallICDebugBreak(MacroAssembler* masm);
-
   // Describes how exactly a frame has been dropped from stack.
   enum FrameDropMode {
     // No frame has been dropped.
     FRAMES_UNTOUCHED,
     // The top JS frame had been calling IC stub. IC stub mustn't be called now.
     FRAME_DROPPED_IN_IC_CALL,
     // The top JS frame had been calling debug break slot stub. Patch the
     // address this stub jumps to in the end.
     FRAME_DROPPED_IN_DEBUG_SLOT_CALL,
     // The top JS frame had been calling some C++ function. The return address
@@ skipping 595 matching lines @@
   Mutex mutex_;
   bool already_signalled_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageDispatchHelperThread);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_DEBUG_H_