Show modified total price for payment instruments.

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 41da607a2a839b3ac49e765536be5bbe99f622d7..bf43cd76dca1dc5f7448a36aa1330634b7d36d7f 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -91757,6 +91757,7 @@ value.
   <int value="-2063352474" label="enable-new-task-manager"/>
   <int value="-2063014275" label="enable-web-bluetooth"/>
   <int value="-2062872298" label="market-url-for-testing"/>
+  <int value="-2062373123" label="WebPaymentsModifiers:enabled"/>
   <int value="-2048732429" label="enable-alternative-services"/>
   <int value="-2048679945" label="NTPOfflinePageDownloadSuggestions:disabled"/>
   <int value="-2047832738" label="enable-system-timezone-automatic-detection"/>
@@ -92246,6 +92247,7 @@ value.
   <int value="278756320" label="disable-app-list-app-info"/>
   <int value="280644887" label="mash"/>
   <int value="301869874" label="NTPPhysicalWebPageSuggestions:disabled"/>
+  <int value="313303258" label="WebPaymentsModifiers:disabled"/>
   <int value="316182183" label="MediaDocumentDownloadButton:disabled"/>
   <int value="323605372" label="ui-disable-compositor-animation-timelines"/>
   <int value="324631366" label="enable-drive-search-in-app-launcher"/>