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components/data_use_measurement/core/data_use.h

Index: components/data_use_measurement/core/data_use.h
diff --git a/components/data_use_measurement/core/data_use.h b/components/data_use_measurement/core/data_use.h
index 55cb7e57ed1abc4347c701a643548926a040f3c1..2cddee48d4779841740d16bcd263f19d452bc1e3 100644
--- a/components/data_use_measurement/core/data_use.h
+++ b/components/data_use_measurement/core/data_use.h
@@ -38,6 +38,8 @@ class DataUse {
 
   int64_t total_bytes_sent() const { return total_bytes_sent_; }
 
+  base::Time start_time() const { return start_time_; }
+
  private:
   friend class DataUseRecorder;
 
@@ -47,6 +49,9 @@ class DataUse {
   int64_t total_bytes_sent_;
   int64_t total_bytes_received_;
 
+  // When this data use started.
+  base::Time start_time_;
+
   DISALLOW_COPY_AND_ASSIGN(DataUse);
 };