Re-re-land FastAccessorBuilder.

include/v8.h

 // 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.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 118 matching lines @@
 class Data;
 template<typename T> class FunctionCallbackInfo;
 template<typename T> class PropertyCallbackInfo;
 class StackTrace;
 class StackFrame;
 class Isolate;
 class CallHandlerHelper;
 class EscapableHandleScope;
 template<typename T> class ReturnValue;
 
+namespace experimental {
+class FastAccessorBuilder;
+}  // namespace experimental
+
 namespace internal {
 class Arguments;
 class Heap;
 class HeapObject;
 class Isolate;
 class Object;
 struct StreamedSource;
 template<typename T> class CustomArguments;
 class PropertyCallbackArguments;
 class FunctionCallbackArguments;
@@ skipping 4263 matching lines @@
   static Local<FunctionTemplate> New(
       Isolate* isolate, FunctionCallback callback = 0,
       Local<Value> data = Local<Value>(),
       Local<Signature> signature = Local<Signature>(), int length = 0);
 
   /**
    * Creates a function template with a fast handler. If a fast handler is set,
    * the callback cannot be null.
    */
   static Local<FunctionTemplate> NewWithFastHandler(
-      Isolate* isolate, FunctionCallback callback, Local<Value> fast_handler,
+      Isolate* isolate, FunctionCallback callback,
+      experimental::FastAccessorBuilder* fast_handler = nullptr,
       Local<Value> data = Local<Value>(),
       Local<Signature> signature = Local<Signature>(), int length = 0);
 
   /** Returns the unique function instance in the current execution context.*/
   V8_DEPRECATE_SOON("Use maybe version", Local<Function> GetFunction());
   V8_WARN_UNUSED_RESULT MaybeLocal<Function> GetFunction(
       Local<Context> context);
 
   /**
    * Set the call-handler callback for a FunctionTemplate.  This
    * callback is called whenever the function created from this
    * FunctionTemplate is called.
    */
-  void SetCallHandler(FunctionCallback callback,
-                      Local<Value> data = Local<Value>(),
-                      Local<Value> fast_handler = Local<Value>());
+  void SetCallHandler(
+      FunctionCallback callback, Local<Value> data = Local<Value>(),
+      experimental::FastAccessorBuilder* fast_handler = nullptr);
 
   /** Set the predefined length property for the FunctionTemplate. */
   void SetLength(int length);
 
   /** Get the InstanceTemplate. */
   Local<ObjectTemplate> InstanceTemplate();
 
   /** Causes the function template to inherit from a parent function template.*/
   void Inherit(Local<FunctionTemplate> parent);
 
@@ skipping 4020 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // INCLUDE_V8_H_