Update comment about TODO in verify_source_deps.py

tools/verify_source_deps.py

 #!/usr/bin/env python
 # Copyright 2015 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """
 Script to print potentially missing source dependencies based on the actual
 .h and .cc files in the source tree and which files are included in the gyp
 and gn files. The latter inclusion is overapproximated.
 
-TODO(machenbach): Gyp files in src will point to source files in src without a
-src/ prefix. For simplicity, all paths relative to src are stripped. But this
-tool won't be accurate for other sources in other directories (e.g. cctest).
+TODO(machenbach): If two source files with the same name exist, but only one
+is referenced from a gyp/gn file, we won't necessarily detect it.
 """
 
 import itertools
 import re
 import os
 import sys
 
 
 V8_BASE = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
 V8_SRC_BASE = os.path.join(V8_BASE, 'src')
@@ skipping 136 matching lines @@
   for i in missing_gyp_files():
     print i
 
   print "\n----------- Files not in gn: -------------"
   for i in missing_gn_files():
     print i
   return 0
 
 if '__main__' == __name__:
   sys.exit(main())