Removing iPad Tab Switcher experimental flag.

ios/chrome/browser/ui/browser_view_controller.h

Index: ios/chrome/browser/ui/browser_view_controller.h
diff --git a/ios/chrome/browser/ui/browser_view_controller.h b/ios/chrome/browser/ui/browser_view_controller.h
index c5326935d8e2ed974391a9cac56e883c838b7c8c..2ee314fda7041fd3063362acbce502e092fe35be 100644
--- a/ios/chrome/browser/ui/browser_view_controller.h
+++ b/ios/chrome/browser/ui/browser_view_controller.h
@@ -77,11 +77,6 @@ extern NSString* const kLocationBarResignsFirstResponderNotification;
 // Invisible button used to dismiss the keyboard.
 @property(nonatomic, retain) UIButton* typingShield;
 
-// Valid only for tablet. YES if the tab strip will display the mode toggle
-// switch. May be set to the same value repeatedly with no layout penalty
-// (guaranteed by the tab strip).
-@property(nonatomic, assign) BOOL hasModeToggleSwitch;
-
 // Activates/deactivates the object. This will enable/disable the ability for
 // this object to browse, and to have live UIWebViews associated with it. While
 // not active, the UI will not react to changes in the tab model, so generally