Update the documentation of Isolate::GetCodeRange

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 4895 matching lines @@
    *     limit separately for each thread.
    */
   void SetStackLimit(uintptr_t stack_limit);
 
   /**
    * Returns a memory range that can potentially contain jitted code.
    *
    * On Win64, embedders are advised to install function table callbacks for
    * these ranges, as default SEH won't be able to unwind through jitted code.
    *
+   * The first page of the code range is reserved for the embedder and is
+   * committed, writable, and executable.
+   *
    * Might be empty on other platforms.
    *
    * https://code.google.com/p/v8/issues/detail?id=3598
    */
   void GetCodeRange(void** start, size_t* length_in_bytes);
 
  private:
   template<class K, class V, class Traits> friend class PersistentValueMap;
 
   Isolate();
@@ skipping 2107 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_