Deprecate Once-Per-Origin Navigation histograms

components/navigation_metrics/navigation_metrics.cc

Index: components/navigation_metrics/navigation_metrics.cc
diff --git a/components/navigation_metrics/navigation_metrics.cc b/components/navigation_metrics/navigation_metrics.cc
index 8958e6d69fa981aa501c0622ab8d8281ee5be94a..428f092dd3c9dec87281e1e8571cf9e5a7ac7e3d 100644
--- a/components/navigation_metrics/navigation_metrics.cc
+++ b/components/navigation_metrics/navigation_metrics.cc
@@ -51,8 +51,7 @@ namespace navigation_metrics {
 
 void RecordMainFrameNavigation(const GURL& url,
                                bool is_in_page,
-                               bool is_off_the_record,
-                               bool have_already_seen_origin) {
+                               bool is_off_the_record) {
   Scheme scheme = SCHEME_UNKNOWN;
   for (int i = 1; i < SCHEME_MAX; ++i) {
     if (url.SchemeIs(kSchemeNames[i])) {
@@ -61,16 +60,6 @@ void RecordMainFrameNavigation(const GURL& url,
     }
   }
 
-  if (!have_already_seen_origin) {
-    if (is_off_the_record) {
-      UMA_HISTOGRAM_ENUMERATION("Navigation.SchemePerUniqueOriginOTR", scheme,
-                                SCHEME_MAX);
-    } else {
-      UMA_HISTOGRAM_ENUMERATION("Navigation.SchemePerUniqueOrigin", scheme,
-                                SCHEME_MAX);
-    }
-  }
-
   UMA_HISTOGRAM_ENUMERATION("Navigation.MainFrameScheme", scheme, SCHEME_MAX);
   if (!is_in_page) {
     UMA_HISTOGRAM_ENUMERATION("Navigation.MainFrameSchemeDifferentPage", scheme,