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

chrome/browser/views/frame/browser_frame_gtk.cc

Index: chrome/browser/views/frame/browser_frame_gtk.cc
===================================================================
--- chrome/browser/views/frame/browser_frame_gtk.cc	(revision 42174)
+++ chrome/browser/views/frame/browser_frame_gtk.cc	(working copy)
@@ -102,6 +102,9 @@
   return this;
 }
 
+void BrowserFrameGtk::TabStripCreated(BaseTabStrip* tabstrip) {
+}
+
 int BrowserFrameGtk::GetMinimizeButtonOffset() const {
   NOTIMPLEMENTED();
   return 0;
@@ -136,9 +139,6 @@
 void BrowserFrameGtk::PaintTabStripShadow(gfx::Canvas* canvas) {
 }
 
-void BrowserFrameGtk::TabStripDisplayModeChanged() {
-}
-
 ThemeProvider* BrowserFrameGtk::GetThemeProvider() const {
   return profile_->GetThemeProvider();
 }