Allow dynamic switching in and out of sidetabs mode.

chrome/browser/views/tabs/side_tab_strip.h

Index: chrome/browser/views/tabs/side_tab_strip.h
===================================================================
--- chrome/browser/views/tabs/side_tab_strip.h	(revision 41630)
+++ chrome/browser/views/tabs/side_tab_strip.h	(working copy)
@@ -25,10 +25,6 @@
   // command line flag that allows the SideTabStrip to be optionally shown.
   static bool Available();
 
-  // Whether or not the vertical tabstrip is shown. Only valid if Available()
-  // returns true.
-  static bool Visible(Profile* profile);
-
   // Notifies the SideTabStrip that a tab was added in the model at |index|.
   void AddTabAt(int index);
 
@@ -48,6 +44,7 @@
   virtual bool IsSelected(SideTab* tab) const;
   virtual void SelectTab(SideTab* tab);
   virtual void CloseTab(SideTab* tab);
+  virtual void ShowContextMenu(SideTab* tab, const gfx::Point& p);
 
   // BaseTabStrip implementation:
   virtual int GetPreferredHeight();