Slightly modified ETA computation algorithm. Also modified UI of the

chrome/browser/chromeos/login/update_screen_actor.h

Index: chrome/browser/chromeos/login/update_screen_actor.h
diff --git a/chrome/browser/chromeos/login/update_screen_actor.h b/chrome/browser/chromeos/login/update_screen_actor.h
index 1d230a4718315815e960ba47f84bdd53727a9375..d88399d782c8ab22648ed23831013a5de856dc64 100644
--- a/chrome/browser/chromeos/login/update_screen_actor.h
+++ b/chrome/browser/chromeos/login/update_screen_actor.h
@@ -11,6 +11,13 @@ namespace chromeos {
 
 class UpdateScreenActor {
  public:
+  enum ProgressMessage {

[Ivan Korotkov, 2012/08/24 09:01:36]

Add a comment, please.

[ygorshenin1, 2012/08/27 12:54:16]

Done.

+    PROGRESS_MESSAGE_UPDATE_AVAILABLE = 0,
+    PROGRESS_MESSAGE_INSTALLING_UPDATE = 1,

[Ivan Korotkov, 2012/08/24 09:01:36]

No need in explicit numbers other than 0.

[ygorshenin1, 2012/08/27 12:54:16]

Done.

+    PROGRESS_MESSAGE_VERIFYING = 2,
+    PROGRESS_MESSAGE_FINALIZING = 3,
+  };
+
   class Delegate {
    public:
     virtual ~Delegate() {}
@@ -44,11 +51,14 @@ class UpdateScreenActor {
   // Sets current estimation for time left in the downloading stage.
   virtual void SetEstimatedTimeLeft(const base::TimeDelta& time) = 0;
 
+  // Shows message under progress bar.

[Ivan Korotkov, 2012/08/24 09:01:36]

Show and enable have somewhat different meanings. Maybe 'bool visible'?

[ygorshenin1, 2012/08/27 12:54:16]

Done.

+  virtual void ShowProgressMessage(bool enable) = 0;
+
+  // Sets message under progress bar.
+  virtual void SetProgressMessage(ProgressMessage message) = 0;
+
   // Shows screen curtains.
   virtual void ShowCurtain(bool enable) = 0;
-
-  // Shows label for "Preparing updates" state.
-  virtual void ShowPreparingUpdatesInfo(bool visible) = 0;
 };
 
 }  // namespace chromeos