Fix memory corruption with AdoptText method....

src/extensions/experimental/break-iterator.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 16 matching lines @@
 
 #ifndef V8_EXTENSIONS_EXPERIMENTAL_BREAK_ITERATOR_H_
 #define V8_EXTENSIONS_EXPERIMENTAL_BREAK_ITERATOR_H_
 
 #include <v8.h>
 
 #include "unicode/uversion.h"
 
 namespace U_ICU_NAMESPACE {
 class BreakIterator;
+class UnicodeString;
 }
 
 namespace v8 {
 namespace internal {
 
 class BreakIterator {
  public:
   static v8::Handle<v8::Value> JSBreakIterator(const v8::Arguments& args);
 
   // Helper methods for various bindings.
 
   // Unpacks break iterator object from corresponding JavaScript object.
   static icu::BreakIterator* UnpackBreakIterator(v8::Handle<v8::Object> obj);
 
+  // Deletes the old value and sets the adopted text in
+  // corresponding JavaScript object.
+  static UnicodeString* ResetAdoptedText(v8::Handle<v8::Object> obj,
+                                         v8::Handle<v8::Value> text_value);
+
   // Release memory we allocated for the BreakIterator once the JS object that
   // holds the pointer gets garbage collected.
   static void DeleteBreakIterator(v8::Persistent<v8::Value> object,
                                   void* param);
 
   // Assigns new text to the iterator.
   static v8::Handle<v8::Value> BreakIteratorAdoptText(
       const v8::Arguments& args);
 
   // Moves iterator to the beginning of the string and returns new position.
@@ skipping 13 matching lines @@
 
  private:
   BreakIterator() {}
 
   static v8::Persistent<v8::FunctionTemplate> break_iterator_template_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_EXTENSIONS_EXPERIMENTAL_BREAK_ITERATOR_H_