Fix handling of minimized panel count

chrome/browser/ui/panels/panel.h

Index: chrome/browser/ui/panels/panel.h
diff --git a/chrome/browser/ui/panels/panel.h b/chrome/browser/ui/panels/panel.h
index 13bccd1515cc23d4731dc9de3e0994f288833c97..7c9a2306a2d8421ae9cb9646bd1c78e274cba76e 100644
--- a/chrome/browser/ui/panels/panel.h
+++ b/chrome/browser/ui/panels/panel.h
@@ -226,7 +226,6 @@ class Panel : public BrowserWindow,
   void SetPanelStrip(PanelStrip* new_strip);
 
   ExpansionState expansion_state() const { return expansion_state_; }
-  ExpansionState old_expansion_state() const { return old_expansion_state_; }
   const gfx::Size& min_size() const { return min_size_; }
   const gfx::Size& max_size() const { return max_size_; }
   bool auto_resizable() const { return auto_resizable_; }
@@ -336,7 +335,6 @@ class Panel : public BrowserWindow,
   NativePanel* native_panel_;  // Weak, owns us.
 
   ExpansionState expansion_state_;
-  ExpansionState old_expansion_state_;
 
   content::NotificationRegistrar registrar_;