Move part of scanner.* into scanner-base.* for reuse in preparser scanner.

test/cctest/test-parsing.cc

 // Copyright 2006-2009 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 245 matching lines @@
       "var x = new new Function('this.x = 42');",
       NULL
   };
 
   for (int i = 0; programs[i]; i++) {
     const char* program = programs[i];
     unibrow::Utf8InputBuffer<256> stream(program, strlen(program));
     i::CompleteParserRecorder log;
     i::Scanner scanner;
     scanner.Initialize(i::Handle<i::String>::null(), &stream, i::JAVASCRIPT);
-    i::preparser::PreParser<i::Scanner, i::CompleteParserRecorder> preparser;
+    v8::preparser::PreParser<i::Scanner, i::CompleteParserRecorder> preparser;
     bool result = preparser.PreParseProgram(&scanner, &log, true);
     CHECK(result);
     i::ScriptDataImpl data(log.ExtractData());
     CHECK(!data.has_error());
   }
 }