Remove unused variable from Scanner class.

src/scanner.cc

-// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Copyright 2010 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
 //       with the distribution.
@@ skipping 323 matching lines @@
 
 
 void Scanner::LiteralScope::Complete() {
   scanner_->TerminateLiteral();
   complete_ = true;
 }
 
 // ----------------------------------------------------------------------------
 // Scanner
 
-Scanner::Scanner(ParserMode pre)
-    : is_pre_parsing_(pre == PREPARSE), stack_overflow_(false) { }
+Scanner::Scanner()
+    : has_line_terminator_before_next_(false),
+      is_parsing_json_(false),
+      source_(NULL),
+      stack_overflow_(false) {}
 
 
 void Scanner::Initialize(Handle<String> source,
                          ParserLanguage language) {
   Init(source, NULL, 0, source->length(), language);
 }
 
 
 void Scanner::Initialize(Handle<String> source,
                          unibrow::CharacterStream* stream,
@@ skipping 990 matching lines @@
     }
     AddCharAdvance();
   }
   literal.Complete();
 
   next_.location.end_pos = source_pos() - 1;
   return true;
 }
 
 } }  // namespace v8::internal