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

components/data_use_measurement/core/data_use_recorder.h

Index: components/data_use_measurement/core/data_use_recorder.h
diff --git a/components/data_use_measurement/core/data_use_recorder.h b/components/data_use_measurement/core/data_use_recorder.h
index 8a26da67f02340ae665019e39c28b26edca1bfc3..7a279512f8f1bdea0ea62e9023eb6769d833ba0d 100644
--- a/components/data_use_measurement/core/data_use_recorder.h
+++ b/components/data_use_measurement/core/data_use_recorder.h
@@ -43,6 +43,12 @@ class DataUseRecorder {
 
   void set_is_visible(bool is_visible) { is_visible_ = is_visible; }
 
+  uint64_t page_transition() const { return page_transition_; }
+
+  void set_page_transition(uint64_t page_transition) {
+    page_transition_ = page_transition;
+  }
+
   // Returns whether data use is complete and no additional data can be used
   // by the entity tracked by this recorder. For example,
   bool IsDataUseComplete();
@@ -98,6 +104,9 @@ class DataUseRecorder {
   // Whether the entity that owns this data use is currently visible.
   bool is_visible_;
 
+  // ui::PageTransition casted as a uint64_t.
+  uint64_t page_transition_;
+
   DISALLOW_COPY_AND_ASSIGN(DataUseRecorder);
 };