Fuchsia port of base/time, with some refactoring of POSIX time modules.

tools/resource_prefetch_predictor/prefetch_predictor_tool.py

 #!/usr/bin/python
 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Inspection of the prefetch predictor database.
 
 On Android, the database can be extracted using:
 adb pull \
   '/data/user/0/$package_name/app_chrome/Default/Network Action Predictor'
@@ skipping 66 matching lines @@
       confidence = float(resource.number_of_hits) / (
           resource.number_of_hits + resource.number_of_misses)
       if resource.number_of_hits < 2 or confidence < .7:
         continue
       self._PrettyPrintResource(resource)
 
 def DumpOriginDatabaseRow(domain, primary_key, proto):
   from resource_prefetch_predictor_pb2 import OriginData
   entry = OriginData()
   entry.ParseFromString(proto)
-  # For the offset, see kWindowsEpochDeltaMicroseconds in
-  # base/time/time_posix.cc.
+  # For the offset, see kTimeTToMicrosecondsOffset in base/time/time.h.
   last_visit_timestamp = int(entry.last_visit_time / 1e6 - 11644473600)
   formatted_last_visit_time = datetime.datetime.utcfromtimestamp(
       last_visit_timestamp).strftime('%Y-%m-%d %H:%M:%S')
   print '''host: %s
 last_visit_time: %s
 origins:''' % (entry.host, formatted_last_visit_time)
   for origin_stat in entry.origins:
     print '''  origin: %s
   number_of_hits: %d
   number_of_misses: %d
@@ skipping 56 matching lines @@
   try:
     database_copy = CreateCompatibleDatabaseCopy(args.database_filename)
     DatabaseStats(database_copy, args.domain)
   finally:
     if os.path.exists(database_copy):
       os.remove(database_copy)
 
 
 if __name__ == '__main__':
   main()