Unified CallWrapper and PostCallGenerator classes, the former is a

src/x64/macro-assembler-x64.h

 // Copyright 2011 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 43 matching lines @@
 static const int kSmiConstantRegisterValue = 1;
 // Actual value of root register is offset from the root array's start
 // to take advantage of negitive 8-bit displacement values.
 static const int kRootRegisterBias = 128;
 
 // Convenience for platform-independent signatures.
 typedef Operand MemOperand;
 
 // Forward declaration.
 class JumpTarget;
-class CallWrapper;
 
 struct SmiIndex {
   SmiIndex(Register index_register, ScaleFactor scale)
       : reg(index_register),
         scale(scale) {}
   Register reg;
   ScaleFactor scale;
 };
 
 // MacroAssembler implements a collection of frequently used macros.
@@ skipping 1110 matching lines @@
   // Macro assembler to emit code.
   MacroAssembler* masm() { return &masm_; }
 
  private:
   byte* address_;  // The address of the code being patched.
   int size_;  // Number of bytes of the expected patch size.
   MacroAssembler masm_;  // Macro assembler used to generate the code.
 };
 
 
-// Helper class for generating code or data associated with the code
-// right before or after a call instruction. As an example this can be used to
-// generate safepoint data after calls for crankshaft.
-class CallWrapper {
- public:
-  CallWrapper() { }
-  virtual ~CallWrapper() { }
-  // Called just before emitting a call. Argument is the size of the generated
-  // call code.
-  virtual void BeforeCall(int call_size) = 0;
-  // Called just after emitting a call, i.e., at the return site for the call.
-  virtual void AfterCall() = 0;
-};
-
-
 // -----------------------------------------------------------------------------
 // Static helper functions.
 
 // Generate an Operand for loading a field from an object.
 static inline Operand FieldOperand(Register object, int offset) {
   return Operand(object, offset - kHeapObjectTag);
 }
 
 
 // Generate an Operand for loading an indexed field from an object.
@@ skipping 789 matching lines @@
       Jump(adaptor, RelocInfo::CODE_TARGET);
     }
     bind(&invoke);
   }
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_MACRO_ASSEMBLER_X64_H_