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

chrome/browser/data_use_measurement/chrome_data_use_ascriber.h

Index: chrome/browser/data_use_measurement/chrome_data_use_ascriber.h
diff --git a/chrome/browser/data_use_measurement/chrome_data_use_ascriber.h b/chrome/browser/data_use_measurement/chrome_data_use_ascriber.h
index 39a3ef1a8bd088eec072724643ca6613019d008e..f1e9b7b35dc0f327126059dbe40077bda897f551 100644
--- a/chrome/browser/data_use_measurement/chrome_data_use_ascriber.h
+++ b/chrome/browser/data_use_measurement/chrome_data_use_ascriber.h
@@ -104,6 +104,10 @@ class ChromeDataUseAscriber : public DataUseAscriber {
                               int new_render_process_id,
                               int new_render_frame_id);
 
+  void DidFinishNavigation(int render_process_id,

[RyanSturm, 2017/01/10 22:56:19]

method Comment.

+                           int render_frame_id,
+                           uint32_t page_transition);
+
  private:
   friend class ChromeDataUseAscriberTest;