Revert of Change calling convention of CallApiGetterStub to accept the AccessorInfo

src/x64/interface-descriptors-x64.cc

 // 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.
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/interface-descriptors.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 35 matching lines @@
 const Register StoreGlobalViaContextDescriptor::ValueRegister() { return rax; }
 
 
 const Register InstanceOfDescriptor::LeftRegister() { return rdx; }
 const Register InstanceOfDescriptor::RightRegister() { return rax; }
 
 
 const Register StringCompareDescriptor::LeftRegister() { return rdx; }
 const Register StringCompareDescriptor::RightRegister() { return rax; }
 
-const Register ApiGetterDescriptor::HolderRegister() { return rcx; }
-const Register ApiGetterDescriptor::CallbackRegister() { return rbx; }
+
+const Register ApiGetterDescriptor::function_address() { return r8; }
+
 
 const Register MathPowTaggedDescriptor::exponent() { return rdx; }
 
 
 const Register MathPowIntegerDescriptor::exponent() {
   return MathPowTaggedDescriptor::exponent();
 }
 
 
 const Register GrowArrayElementsDescriptor::ObjectRegister() { return rax; }
@@ skipping 357 matching lines @@
       rdx,  // the typedarray object
       rax   // the index to load (untagged)
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64