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-rw-r--r--chromium/components/navigation_metrics/navigation_metrics.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/chromium/components/navigation_metrics/navigation_metrics.h b/chromium/components/navigation_metrics/navigation_metrics.h
index a55887a3b0f..d0e2c28f82d 100644
--- a/chromium/components/navigation_metrics/navigation_metrics.h
+++ b/chromium/components/navigation_metrics/navigation_metrics.h
@@ -13,6 +13,15 @@ enum class BrowserProfileType;
namespace navigation_metrics {
+// Names of the metrics logged by RecordMainFrameNavigation() function.
+extern const char kMainFrameScheme[];
+extern const char kMainFrameSchemeDifferentPage[];
+extern const char kMainFrameSchemeOTR[];
+extern const char kMainFrameSchemeDifferentPageOTR[];
+extern const char kMainFrameHasRTLDomain[];
+extern const char kMainFrameHasRTLDomainDifferentPage[];
+extern const char kMainFrameProfileType[];
+
// A Scheme is an C++ enum type loggable in UMA for a histogram of UMA enum type
// NavigationScheme.
//