Revert r42156, r42157, r42160. Allow dynamic switching in and out of sidetabs...

chrome/browser/views/tabs/side_tab_strip.cc

Index: chrome/browser/views/tabs/side_tab_strip.cc
===================================================================
--- chrome/browser/views/tabs/side_tab_strip.cc	(revision 42174)
+++ chrome/browser/views/tabs/side_tab_strip.cc	(working copy)
@@ -38,6 +38,12 @@
       switches::kEnableVerticalTabs);
 }
 
+// static
+bool SideTabStrip::Visible(Profile* profile) {
+  return Available() &&
+      profile->GetPrefs()->GetBoolean(prefs::kUseVerticalTabs);
+}
+
 void SideTabStrip::AddTabAt(int index) {
   SideTab* tab = new SideTab(this);
   AddChildView(tab);
@@ -82,10 +88,6 @@
   model_->CloseTab(GetIndexOfSideTab(tab));
 }
 
-void SideTabStrip::ShowContextMenu(SideTab* tab, const gfx::Point& p) {
-  model_->ShowContextMenu(GetIndexOfSideTab(tab), p);
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // SideTabStrip, BaseTabStrip implementation: