Modify rappor parameters.

components/rappor/rappor_metric_unittest.cc

 // 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.
 
 #include "components/rappor/rappor_metric.h"
 
 #include <stdlib.h>
 
 #include "base/rand_util.h"
 #include "base/strings/stringprintf.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace rappor {
 
 const RapporParameters kTestRapporParameters = {
+    1 /* Num cohorts */,
     16 /* Bloom filter size bytes */,
     4 /* Bloom filter hash count */,
     PROBABILITY_75 /* Fake data probability */,
     PROBABILITY_50 /* Fake one probability */,
     PROBABILITY_75 /* One coin probability */,
     PROBABILITY_50 /* Zero coin probability */};
 
 const RapporParameters kTestStatsRapporParameters = {
+    1 /* Num cohorts */,
     50 /* Bloom filter size bytes */,
     4 /* Bloom filter hash count */,
     PROBABILITY_75 /* Fake data probability */,
     PROBABILITY_50 /* Fake one probability */,
     PROBABILITY_75 /* One coin probability */,
     PROBABILITY_50 /* Zero coin probability */};
 
 // Check for basic syntax and use.
 TEST(RapporMetricTest, BasicMetric) {
   RapporMetric testMetric("MyRappor", kTestRapporParameters, 0);
@@ skipping 53 matching lines @@
   // stats.binom(152, 0.65625).ppf(0.999995) = 124
   EXPECT_LE(true_from_true_count, 124);
 
   // stats.binom(248, 0.59375).ppf(.000005) = 113
   EXPECT_GT(true_from_false_count, 113);
   // stats.binom(248, 0.59375).ppf(.999995) = 181
   EXPECT_LE(true_from_false_count, 181);
 }
 
 }  // namespace rappor