Get rid of ZoneScope completely.

src/jsregexp.h

 // Copyright 2012 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 53 matching lines @@
   // Implements RegExp.prototype.toString, see ECMA-262 section 15.10.6.4.
   // This function calls the garbage collector if necessary.
   static Handle<String> ToString(Handle<Object> value);
 
   // Parses the RegExp pattern and prepares the JSRegExp object with
   // generic data and choice of implementation - as well as what
   // the implementation wants to store in the data field.
   // Returns false if compilation fails.
   static Handle<Object> Compile(Handle<JSRegExp> re,
                                 Handle<String> pattern,
-                                Handle<String> flags,
-                                Zone* zone);
+                                Handle<String> flags);
 
   // See ECMA-262 section 15.10.6.2.
   // This function calls the garbage collector if necessary.
   static Handle<Object> Exec(Handle<JSRegExp> regexp,
                              Handle<String> subject,
                              int index,
                              Handle<JSArray> lastMatchInfo);
 
   // Prepares a JSRegExp object with Irregexp-specific data.
   static void IrregexpInitialize(Handle<JSRegExp> re,
@@ skipping 1528 matching lines @@
                                    Handle<String> sample_subject,
                                    bool is_ascii, Zone* zone);
 
   static void DotPrint(const char* label, RegExpNode* node, bool ignore_case);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_JSREGEXP_H_