Removes TabStrip::CanUpdateDisplay as it lead to crashes on the...

chrome/browser/gtk/tabs/tab_strip_gtk.h

Index: chrome/browser/gtk/tabs/tab_strip_gtk.h
===================================================================
--- chrome/browser/gtk/tabs/tab_strip_gtk.h	(revision 31449)
+++ chrome/browser/gtk/tabs/tab_strip_gtk.h	(working copy)
@@ -380,12 +380,6 @@
   void StartPinAndMoveTabAnimation(int from_index, int to_index,
                                    const gfx::Rect& start_bounds);
 
-  // Returns true if detach or select changes in the model should be reflected
-  // in the TabStrip. This returns false if we're closing all tabs in the
-  // TabStrip and so we should prevent updating. This is not const because we
-  // use this as a signal to cancel any active animations.
-  bool CanUpdateDisplay();
-
   // Notifies the TabStrip that the specified TabAnimation has completed.
   // Optionally a full Layout will be performed, specified by |layout|.
   void FinishAnimation(TabAnimation* animation, bool layout);