Record data use of user traffic by different core page transition types

components/data_use_measurement/core/data_use_measurement.h

Index: components/data_use_measurement/core/data_use_measurement.h
diff --git a/components/data_use_measurement/core/data_use_measurement.h b/components/data_use_measurement/core/data_use_measurement.h
index a0e4298c94e59d77b0f7a9eab46f4cb649f2aa6e..931d6f1033d3a1fc50652411e3e6dd8e864d807f 100644
--- a/components/data_use_measurement/core/data_use_measurement.h
+++ b/components/data_use_measurement/core/data_use_measurement.h
@@ -140,7 +140,10 @@ class DataUseMeasurement {
   void RecordTabStateHistogram(TrafficDirection dir,
                                DataUseUserData::AppState app_state,
                                bool is_tab_visible,
-                               int64_t bytes);
+                               int64_t bytes) const;
+
+  // Records data use histograms split on page tranition.
+  void RecordPageTransitionUMA(const net::URLRequest& request) const;
 
   // Records data use histograms of user traffic and services traffic split on
   // content type, AppState and TabState.