Experimental scanner: support preparsing API.

src/parser.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 136 matching lines @@
 
 
 class PreParserApi {
  public:
   // Pre-parse a character stream and return full preparse data.
   //
   // This interface is here instead of in preparser.h because it instantiates a
   // preparser recorder object that is suited to the parser's purposes.  Also,
   // the preparser doesn't know about ScriptDataImpl.
   static ScriptDataImpl* PreParse(Isolate* isolate,
-                                  Utf16CharacterStream* source);
+                                  Handle<String> source);
 };
 
 
 // ----------------------------------------------------------------------------
 // REGEXP PARSING
 
 // A BufferedZoneList is an automatically growing list, just like (and backed
 // by) a ZoneList, that is optimized for the case of adding and removing
 // a single element. The last element added is stored outside the backing list,
 // and if no more than one element is ever added, the ZoneList isn't even
@@ skipping 646 matching lines @@
  private:
   static const int kLiteralTypeSlot = 0;
   static const int kElementsSlot = 1;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(CompileTimeValue);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_PARSER_H_