1 files changed, 5 insertions, 0 deletions
diff --git a/chrome/browser/browser.h b/chrome/browser/browser.h
index 15123da..6527d2c 100644
--- a/chrome/browser/browser.h
+++ b/chrome/browser/browser.h
@@ -622,6 +622,8 @@ class Browser : public TabStripModelDelegate,
   virtual bool CanCloseContentsAt(int index);
   virtual bool CanBookmarkAllTabs() const;
   virtual void BookmarkAllTabs();
+  virtual bool UseVerticalTabs() const;
+  virtual void ToggleUseVerticalTabs();
 
   // Overridden from TabStripModelObserver:
   virtual void TabInsertedAt(TabContents* contents,
@@ -968,6 +970,9 @@ class Browser : public TabStripModelDelegate,
   // The extension app associated with this window, if any.
   Extension* extension_app_;
 
+  // Tracks the display mode of the tabstrip.
+  mutable BooleanPrefMember use_vertical_tabs_;
+
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };