[Autofill] Separate Autofill.CreditCardInfoBar into .Local and .Server

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 01008b11f9b48e9614d25e67e4ea1f0879b0c18a..e57f8271f0119ebcb973b2a450c13f2ce2a010be 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -3013,6 +3013,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="Autofill.CreditCardInfoBar" enum="AutofillCreditCardInfoBar">
+  <obsolete>
+    Deprecated as of 10/2016, split into .Local and .Server versions.
+  </obsolete>
   <owner>isherman@chromium.org</owner>
   <summary>
     The relative frequency with which users accept, deny, or ignore the Autofill
@@ -3020,6 +3023,24 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="Autofill.CreditCardInfoBar.Local"
+    enum="AutofillCreditCardInfoBar">
+  <owner>isherman@chromium.org</owner>
+  <summary>
+    The relative frequency with which users accept, deny, or ignore the Autofill
+    credit card info bar prompt for local saving of credit cards.
+  </summary>
+</histogram>
+
+<histogram name="Autofill.CreditCardInfoBar.Server"
+    enum="AutofillCreditCardInfoBar">
+  <owner>isherman@chromium.org</owner>
+  <summary>
+    The relative frequency with which users accept, deny, or ignore the Autofill
+    credit card info bar prompt for server/upload saving of credit cards.
+  </summary>
+</histogram>

[Ilya Sherman, 2016/10/19 22:04:16]

Could you use a histogram_suffixes element, and mark the original histogram as a
"base" histogram?

[Jared Saul, 2016/10/19 22:51:50]

Done, how's this?

+
 <histogram name="Autofill.DaysSinceLastUse.CreditCard" units="days">
   <owner>sebsg@chromium.org</owner>
   <summary>