Simplify pending message script handling.

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 6069 matching lines @@
   // Make it hard to create heap-allocated TryCatch blocks.
   TryCatch(const TryCatch&);
   void operator=(const TryCatch&);
   void* operator new(size_t size);
   void operator delete(void*, size_t);
 
   v8::internal::Isolate* isolate_;
   v8::TryCatch* next_;
   void* exception_;
   void* message_obj_;
-  void* message_script_;
   void* js_stack_comparable_address_;
   bool is_verbose_ : 1;
   bool can_continue_ : 1;
   bool capture_message_ : 1;
   bool rethrow_ : 1;
   bool has_terminated_ : 1;
 
   friend class v8::internal::Isolate;
 };
 
@@ skipping 1727 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_