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

src/compiler/code-assembler.h

 // Copyright 2015 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_COMPILER_CODE_ASSEMBLER_H_
 #define V8_COMPILER_CODE_ASSEMBLER_H_
 
 #include <map>
 #include <memory>
 
@@ skipping 361 matching lines @@
                  Node* context, const Arg& arg1, const Arg& arg2,
                  const Arg& arg3, size_t result_size = 1);
   Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target,
                  Node* context, const Arg& arg1, const Arg& arg2,
                  const Arg& arg3, const Arg& arg4, size_t result_size = 1);
   Node* CallStub(const CallInterfaceDescriptor& descriptor, Node* target,
                  Node* context, const Arg& arg1, const Arg& arg2,
                  const Arg& arg3, const Arg& arg4, const Arg& arg5,
                  size_t result_size = 1);
 
+  Node* CallStubN(const CallInterfaceDescriptor& descriptor,
+                  int js_parameter_count, Node* target, Node** args,
+                  size_t result_size = 1);
   Node* CallStubN(const CallInterfaceDescriptor& descriptor, Node* target,
-                  Node** args, size_t result_size = 1);
+                  Node** args, size_t result_size = 1) {
+    return CallStubN(descriptor, 0, target, args, result_size);
+  }
 
   Node* TailCallStub(Callable const& callable, Node* context, Node* arg1,
                      size_t result_size = 1);
   Node* TailCallStub(Callable const& callable, Node* context, Node* arg1,
                      Node* arg2, size_t result_size = 1);
   Node* TailCallStub(Callable const& callable, Node* context, Node* arg1,
                      Node* arg2, Node* arg3, size_t result_size = 1);
   Node* TailCallStub(Callable const& callable, Node* context, Node* arg1,
                      Node* arg2, Node* arg3, Node* arg4,
                      size_t result_size = 1);
@@ skipping 104 matching lines @@
   // Map of variables to the list of value nodes that have been added from each
   // merge path in their order of merging.
   std::map<Variable::Impl*, std::vector<Node*>> variable_merges_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_CODE_ASSEMBLER_H_