Attemp 2 at:

chrome/browser/views/tabs/tab_strip.h

Index: chrome/browser/views/tabs/tab_strip.h
diff --git a/chrome/browser/views/tabs/tab_strip.h b/chrome/browser/views/tabs/tab_strip.h
index 92ba7f92c1d6830c388d8c1c9eb81edc624663d5..2620f22c3274a6fa7cff4952977f18cb680086a5 100644
--- a/chrome/browser/views/tabs/tab_strip.h
+++ b/chrome/browser/views/tabs/tab_strip.h
@@ -45,16 +45,6 @@ class TabStrip : public BaseTabStrip,
   explicit TabStrip(TabStripController* controller);
   virtual ~TabStrip();
 
-  // Set whether the new tab button is enabled.
-  void set_new_tab_button_enabled(bool enabled) {
-    new_tab_button_enabled_ = enabled;
-  }
-
-  // Returns whether the new tab button is enabled.
-  bool new_tab_button_enabled() {
-    return new_tab_button_enabled_;
-  }
-
   // Creates the new tab button.
   void InitTabStripButtons();
 
@@ -312,9 +302,6 @@ class TabStrip : public BaseTabStrip,
   // Used for stage 1 of new tab animation.
   base::OneShotTimer<TabStrip> new_tab_timer_;
 
-  // Whether the new tab button is being displayed.
-  bool new_tab_button_enabled_;
-
   DISALLOW_COPY_AND_ASSIGN(TabStrip);
 };