[turbofan] Call FastNewContextStub for function context.

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/runtime/runtime.h"
 
 namespace v8 {
@@ skipping 541 matching lines @@
   const Operator* TypeOf();
   const Operator* InstanceOf();
 
   const Operator* ForInDone();
   const Operator* ForInNext();
   const Operator* ForInPrepare();
   const Operator* ForInStep();
 
   const Operator* StackCheck();
 
-  const Operator* CreateFunctionContext();
+  const Operator* CreateFunctionContext(int slot_count);
   const Operator* CreateCatchContext(const Handle<String>& name);
   const Operator* CreateWithContext();
   const Operator* CreateBlockContext(const Handle<ScopeInfo>& scpope_info);
   const Operator* CreateModuleContext();
   const Operator* CreateScriptContext(const Handle<ScopeInfo>& scpope_info);
 
  private:
   Zone* zone() const { return zone_; }
 
   const JSOperatorGlobalCache& cache_;
   Zone* const zone_;
 
   DISALLOW_COPY_AND_ASSIGN(JSOperatorBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_JS_OPERATOR_H_