[Autofill] Log count histogram for the number of server cards

components/autofill/core/browser/autofill_metrics.cc

Index: components/autofill/core/browser/autofill_metrics.cc
diff --git a/components/autofill/core/browser/autofill_metrics.cc b/components/autofill/core/browser/autofill_metrics.cc
index 7bcb451794b337cd9f96c0ea41d5e93a689aac36..528dbf28eb45291e998bcf5164366a5bc9b66460 100644
--- a/components/autofill/core/browser/autofill_metrics.cc
+++ b/components/autofill/core/browser/autofill_metrics.cc
@@ -529,6 +529,16 @@ void AutofillMetrics::LogStoredLocalCreditCardCount(size_t num_local_cards) {
 }
 
 // static
+void AutofillMetrics::LogStoredServerCreditCardCounts(
+    size_t num_masked_cards,
+    size_t num_unmasked_cards) {
+  UMA_HISTOGRAM_COUNTS("Autofill.StoredServerCreditCardCount.Masked",

[rkaplow, 2016/10/07 17:33:49]

nit, we're recommending an explicit max now. see histogram_macros.h for details.

COUNTS is the same as HISTOGRAM_COUNTS_1M FWIW if you want to keep this up to
1M. I'm guessing something like 1000 or 10000 is more appropriate

[Mathieu, 2016/10/08 01:36:06]

Done.

+                       num_masked_cards);
+  UMA_HISTOGRAM_COUNTS("Autofill.StoredServerCreditCardCount.Unmasked",
+                       num_unmasked_cards);
+}
+
+// static
 void AutofillMetrics::LogNumberOfProfilesAtAutofillableFormSubmission(
     size_t num_profiles) {
   UMA_HISTOGRAM_COUNTS(