[Payments] Don't record CanMakePayment when in incognito mode.

components/payments/core/journey_logger.h

Index: components/payments/core/journey_logger.h
diff --git a/components/payments/core/journey_logger.h b/components/payments/core/journey_logger.h
index 5c35c0d7ecfa3015fcc4fd653f6d092183858a6d..3760ec64459df6ba8e4c8174639e836d3426913b 100644
--- a/components/payments/core/journey_logger.h
+++ b/components/payments/core/journey_logger.h
@@ -75,6 +75,9 @@ class JourneyLogger {
   // Records the fact that the Payment Request was shown to the user.
   void SetShowCalled();
 
+  // Records the fact that the Payment Request was done in an incognito tab.
+  void SetIsIncognito();
+
   // Records the histograms for all the sections that were requested by the
   // merchant and for the usage of the CanMakePayment method and its effect on
   // the transaction. This method should be called when the Payment Request has
@@ -112,7 +115,8 @@ class JourneyLogger {
   // merchant.
   void RecordSectionSpecificStats(CompletionStatus completion_status);
 
-  // Records the metrics related the the CanMakePayment method.
+  // Records the metrics related the the CanMakePayment method, if the Payment
+  // Request was not done in an incognito tab.
   void RecordCanMakePaymentStats(CompletionStatus completion_status);
 
   // Records CanMakePayment's return value effect on whether the Payment Request
@@ -128,6 +132,7 @@ class JourneyLogger {
   bool was_can_make_payments_used_;
   bool could_make_payment_;
   bool was_show_called_;
+  bool is_incognito_;
 
   DISALLOW_COPY_AND_ASSIGN(JourneyLogger);
 };