Remove all uses of StringShape variables, since that has proven...

src/jsregexp.h

 // Copyright 2006-2008 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 90 matching lines @@
   // Execute an Irregexp bytecode pattern.
   static Handle<Object> IrregexpExec(Handle<JSRegExp> regexp,
                                      Handle<String> subject,
                                      int index,
                                      Handle<JSArray> lastMatchInfo);
 
   static Handle<Object> IrregexpExecGlobal(Handle<JSRegExp> regexp,
                                            Handle<String> subject,
                                            Handle<JSArray> lastMatchInfo);
 
-  static void NewSpaceCollectionPrologue();
-  static void OldSpaceCollectionPrologue();
-
-  // Converts a source string to a 16 bit flat string.  The string
-  // will be either sequential or it will be a SlicedString backed
-  // by a flat string.
-  static Handle<String> StringToTwoByte(Handle<String> pattern);
-  static Handle<String> CachedStringToTwoByte(Handle<String> pattern);
-
   // Offsets in the lastMatchInfo array.
   static const int kLastCaptureCount = 0;
   static const int kLastSubject = 1;
   static const int kLastInput = 2;
   static const int kFirstCapture = 1;
   static const int kLastMatchOverhead = 3;
 
   // Used to access the lastMatchInfo array.
   static int GetCapture(FixedArray* array, int index) {
     return Smi::cast(array->get(index + kFirstCapture))->value();
@@ skipping 1260 matching lines @@
                                    Handle<String> pattern,
                                    bool is_ascii);
 
   static void DotPrint(const char* label, RegExpNode* node, bool ignore_case);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_JSREGEXP_H_