Remove "client_version" test from chromium

tools/chrome_proxy/integration_tests/chrome_proxy_metrics.py

 # Copyright 2014 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.
 
 import logging
 import os
 import time
 
 from common import chrome_proxy_metrics
 from common import network_metrics
@@ skipping 152 matching lines @@
         if resp.HasExtraViaHeader(extra_via_header):
           extra_via_count += 1
         else:
           raise ChromeProxyMetricException, (
               '%s: Should have via header %s.' % (resp.response.url,
                                                   extra_via_header))
 
     results.AddValue(scalar.ScalarValue(
         results.current_page, 'extra_via_header', 'count', extra_via_count))
 
-  def AddResultsForClientVersion(self, tab, results):
-    via_count = 0
-    for resp in self.IterResponses(tab):
-      r = resp.response
-      if resp.response.status != 200:
-        raise ChromeProxyMetricException, ('%s: Response is not 200: %d' %
-                                           (r.url, r.status))
-      if not resp.IsValidByViaHeader():
-        raise ChromeProxyMetricException, ('%s: Response missing via header' %
-                                           (r.url))
-      via_count += 1
-
-    if via_count == 0:
-      raise ChromeProxyMetricException, (
-          'Expected at least one response through the proxy, but zero such '
-          'responses were received.')
-    results.AddValue(scalar.ScalarValue(
-        results.current_page, 'responses_via_proxy', 'count', via_count))
-
   def GetClientTypeFromRequests(self, tab):
     """Get the Chrome-Proxy client type value from requests made in this tab.
 
     Returns:
         The client type value from the first request made in this tab that
         specifies a client type in the Chrome-Proxy request header. See
         ChromeProxyResponse.GetChromeProxyClientType for more details about the
         Chrome-Proxy client type. Returns None if none of the requests made in
         this tab specify a client type.
     """
@@ skipping 706 matching lines @@
     except KeyError:
       raise ChromeProxyMetricException, 'No metrics found'
 
 # Returns whether |url| is a block-once test URL. Data Reduction Proxy has been
 # configured to always return block-once for these URLs.
 def IsTestUrlForBlockOnce(url):
   return (url == 'http://check.googlezip.net/blocksingle/' or
       url == ('http://chromeproxy-test.appspot.com/default?respBody=T0s='
               '&respHeader=eyJBY2Nlc3MtQ29udHJvbC1BbGxvdy1PcmlnaW4iOlsiKiJ'
               'dfQ==&respStatus=200&flywheelAction=block-once'))