Fix broken chrome_proxy unit tests

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 399 matching lines @@
     if via_proxy == 0:
       raise ChromeProxyMetricException, (
           'None of the requests went via data reduction proxy')
 
     if (eligible_response_count != 2):
       raise ChromeProxyMetricException, (
           'Did not make expected number of requests to whitelisted block-once'
           ' test URLs. Expected: 2, Actual: ' + str(eligible_response_count))
 
     results.AddValue(scalar.ScalarValue(results.current_page,
-        'BlockOnce_success', 'num_eligible_response', 2))
+        'eligible_responses', 'count', 2))
 
 
   def AddResultsForSafebrowsingOn(self, tab, results):
     results.AddValue(scalar.ScalarValue(
         results.current_page, 'safebrowsing', 'timeout responses', 1))
 
   def AddResultsForSafebrowsingOff(self, tab, results):
     response_count = 0
     for resp in self.IterResponses(tab):
       # Data reduction proxy should return the real response for sites with
@@ skipping 309 matching lines @@
       if failed:
         raise ChromeProxyMetricException, 'failed'
     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=&respStatus=200&flywheelAction=block-once')