Added estimated time remaining on AU.

chrome/browser/chromeos/login/update_screen.h

Index: chrome/browser/chromeos/login/update_screen.h
diff --git a/chrome/browser/chromeos/login/update_screen.h b/chrome/browser/chromeos/login/update_screen.h
index 39e8966e598f33b249e38795a65f5f1188a5f8f4..f487aa6951c198937d37bd0b5d3a861fc3b18439 100644
--- a/chrome/browser/chromeos/login/update_screen.h
+++ b/chrome/browser/chromeos/login/update_screen.h
@@ -11,6 +11,7 @@
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/time.h"
 #include "base/timer.h"
 #include "chrome/browser/chromeos/login/update_screen_actor.h"
 #include "chrome/browser/chromeos/login/wizard_screen.h"
@@ -69,6 +70,10 @@ class UpdateScreen: public UpdateEngineClient::Observer,
   FRIEND_TEST_ALL_PREFIXES(UpdateScreenTest, TestBasic);
   FRIEND_TEST_ALL_PREFIXES(UpdateScreenTest, TestUpdateAvailable);
 
+  // Updates downloading stats (remaining time and downloading
+  // progress) on the AU screen.
+  void UpdateDownloadingStats(const UpdateEngineClient::Status& status);
+
   // Returns true if there is critical system update that requires installation
   // and immediate reboot.
   bool HasCriticalUpdate();
@@ -107,6 +112,17 @@ class UpdateScreen: public UpdateEngineClient::Observer,
   // Keeps actor which is delegated with all showing operations.
   UpdateScreenActor* actor_;
 
+  // Time of the first notification from the downloading stage.
+  base::Time download_start_time_;
+  double download_start_progress_;
+
+  // Time of the last notification from the downloading stage.
+  base::Time download_last_time_;
+  double download_last_progress_;
+
+  bool is_download_average_speed_computed_;
+  double download_average_speed_;
+
   DISALLOW_COPY_AND_ASSIGN(UpdateScreen);
 };