Move frog/leg to lib/compiler/implementation.

lib/compiler/implementation/scanner/node_scanner_bench.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #library('node_scanner_bench');
-#import('../../lib/node/node.dart');
+#import('../../node/node.dart');
 #import('scannerlib.dart');
 #import('scanner_implementation.dart');
 #import('scanner_bench.dart');
-#import('../../../lib/utf/utf.dart');
+#import('../../../utf/utf.dart');
 #source('byte_strings.dart');
 #source('byte_array_scanner.dart');
 
 class NodeScannerBench extends ScannerBench {
   int getBytes(String filename, void callback(bytes)) {
     // This actually returns a buffer, not a String.
     var s = fs.readFileSync(filename, null);
     callback(s);
     return s.length;
   }
@@ skipping 18 matching lines @@
     // inline.
     int index = ++byteOffset;
     int next = (bytes.length > index) ? bytes[index] : $EOF;
     return next;
   }
 }
 
 main() {
   new NodeScannerBench().main(argv);
 }