[TabManager] Start function refactoring.

chrome/browser/memory/tab_manager.h

Index: chrome/browser/memory/tab_manager.h
diff --git a/chrome/browser/memory/tab_manager.h b/chrome/browser/memory/tab_manager.h
index 2f82d0c81cdb1e71a4cab90b6a7cd94eb5726a3e..1c1c673f11e088cfb081e6fef7b5582359f326cc 100644
--- a/chrome/browser/memory/tab_manager.h
+++ b/chrome/browser/memory/tab_manager.h
@@ -243,6 +243,9 @@ class TabManager : public TabStripModelObserver {
   // Implementation of DiscardTab.
   bool DiscardTabImpl();
 
+  // Returns true if tabs can be discarded only once.
+  bool ShouldOnlyDiscardOnce();

[Georges Khalil, 2016/05/17 15:18:01]

nit: Finally, I think CanOnlyDiscardOnce makes more sense as the name. It
matches the description as well.

[Anderson Silva, 2016/05/17 15:34:07]

Acknowledged.

+
   // Timer to periodically update the stats of the renderers.
   base::RepeatingTimer update_timer_;