Use default argument count for runtime function calls.

src/compiler/js-operator.h

 // Copyright 2013 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_JS_OPERATOR_H_
 #define V8_COMPILER_JS_OPERATOR_H_
 
 #include "src/compiler/type-hints.h"
 #include "src/runtime/runtime.h"
 
@@ skipping 509 matching lines @@
   const Operator* CreateLiteralObject(Handle<FixedArray> constant_properties,
                                       int literal_flags, int literal_index);
   const Operator* CreateLiteralRegExp(Handle<String> constant_pattern,
                                       int literal_flags, int literal_index);
 
   const Operator* CallFunction(
       size_t arity, LanguageMode language_mode,
       VectorSlotPair const& feedback = VectorSlotPair(),
       ConvertReceiverMode convert_mode = ConvertReceiverMode::kAny,
       TailCallMode tail_call_mode = TailCallMode::kDisallow);
+  const Operator* CallRuntime(Runtime::FunctionId id);
   const Operator* CallRuntime(Runtime::FunctionId id, size_t arity);
+  const Operator* CallRuntime(const Runtime::Function* function, size_t arity);
   const Operator* CallConstruct(size_t arity, VectorSlotPair const& feedback);
 
   const Operator* ConvertReceiver(ConvertReceiverMode convert_mode);
 
   const Operator* LoadProperty(LanguageMode language_mode,
                                VectorSlotPair const& feedback);
   const Operator* LoadNamed(LanguageMode language_mode, Handle<Name> name,
                             VectorSlotPair const& feedback);
 
   const Operator* StoreProperty(LanguageMode language_mode,
@@ skipping 45 matching lines @@
   Zone* const zone_;
 
   DISALLOW_COPY_AND_ASSIGN(JSOperatorBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_JS_OPERATOR_H_