[stubs] ApiCallbackDescriptor cleanup - make it independent on the number of JS parameters.

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 334 matching lines @@
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rdi,  // JSFunction
       rdx,  // the new target
       rax,  // actual number of arguments
       rbx,  // expected number of arguments
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
-void ApiCallbackDescriptorBase::InitializePlatformSpecific(
+void ApiCallbackDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rdi,  // callee
       rbx,  // call_data
       rcx,  // holder
       rdx,  // api_function_address
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
@@ skipping 55 matching lines @@
       rbx,  // the JSGeneratorObject to resume
       rdx   // the resume mode (tagged)
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64