Create a mechanism for reporting rappor metrics from non-UMA

components/rappor/rappor_metric.cc

Index: components/rappor/rappor_metric.cc
diff --git a/components/rappor/rappor_metric.cc b/components/rappor/rappor_metric.cc
index 92765de6e89b79e7c3c02873c2c6403b53fb2fea..980c0085e1b75d3be97068bb98e6a836e0dda0cb 100644
--- a/components/rappor/rappor_metric.cc
+++ b/components/rappor/rappor_metric.cc
@@ -21,6 +21,7 @@ RapporMetric::RapporMetric(const std::string& metric_name,
                         parameters.bloom_filter_hash_function_count) {
   DCHECK_GE(cohort_seed, 0);
   DCHECK_LT(cohort_seed, RapporParameters::kMaxCohorts);
+  DCHECK_EQ(RapporParameters::kMaxCohorts % parameters.num_cohorts, 0);

[jwd, 2014/10/03 19:53:03]

Can you add a comment about this in rappor_parametrs.h. And maybe a note here
about it. I don't see why this is the case. 

[Steven Holte, 2014/10/03 20:09:23]

Done.

 }
 
 RapporMetric::~RapporMetric() {}