Notify DataUseTabModel of navigations and tab closures

chrome/browser/android/data_usage/data_use_tab_model.h

Index: chrome/browser/android/data_usage/data_use_tab_model.h
diff --git a/chrome/browser/android/data_usage/data_use_tab_model.h b/chrome/browser/android/data_usage/data_use_tab_model.h
index 43a07bdb110c5a8ac329cb20af38617e10afe9e3..50bb11312183a3a47482bdd26bcb86bec83728b4 100644
--- a/chrome/browser/android/data_usage/data_use_tab_model.h
+++ b/chrome/browser/android/data_usage/data_use_tab_model.h
@@ -83,12 +83,10 @@ class DataUseTabModel {
 
   // Notifies the DataUseTabModel of navigation events. |tab_id| is the source
   // tab of the generated event, |transition| indicates the type of the UI
-  // event/transition,  |url| is the URL in the source tab, |package| indicates
-  // the android package name of external application that initiated the event.
+  // event/transition,  |url| is the URL in the source tab.
   void OnNavigationEvent(int32_t tab_id,
                          TransitionType transition,
-                         const GURL& url,
-                         const std::string& package);
+                         const GURL& url);
 
   // Notifies the DataUseTabModel that tab with |tab_id| is closed. Any active
   // tracking sessions for the tab are terminated, and the tab is marked as