[Chromedriver] Drop support for M47 and add M50.

chrome/test/chromedriver/archive.py

 # Copyright (c) 2013 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.
 
 """Downloads items from the Chromium continuous archive."""
 
 import os
 import platform
 import urllib
 
 import util
 
-CHROME_47_REVISION = '352825'
 CHROME_48_REVISION = '359663'
 CHROME_49_REVISION = '369874'
+CHROME_50_REVISION = '377898'
 
 _SITE = 'http://commondatastorage.googleapis.com'
 
 
 class Site(object):
   CONTINUOUS = _SITE + '/chromium-browser-continuous'
   CHROMIUM_SNAPSHOT = _SITE + '/chromium-browser-snapshots'
   BLINK_SNAPSHOT = _SITE + '/chromium-webkit-snapshots'
 
 
@@ skipping 57 matching lines @@
 
 
 def GetLatestSnapshotVersion():
   """Returns the latest revision of snapshot build."""
   return GetLatestRevision(GetSnapshotDownloadSite())
 
 
 def GetSnapshotDownloadSite():
   """Returns the site to download snapshot build according to the platform."""
   return Site.CHROMIUM_SNAPSHOT