Remove ChromeNativeAppWindowViews::is_fullscreen_.

chrome/browser/ui/views/apps/chrome_native_app_window_views.h

Index: chrome/browser/ui/views/apps/chrome_native_app_window_views.h
diff --git a/chrome/browser/ui/views/apps/chrome_native_app_window_views.h b/chrome/browser/ui/views/apps/chrome_native_app_window_views.h
index a21b9659aa650d9d271df9335f09964f9ffaf735..5de83b1eff194d597b6aa8935b508d93dcf1624b 100644
--- a/chrome/browser/ui/views/apps/chrome_native_app_window_views.h
+++ b/chrome/browser/ui/views/apps/chrome_native_app_window_views.h
@@ -75,9 +75,6 @@ class ChromeNativeAppWindowViews
       const extensions::AppWindow::CreateParams& create_params) override;
 
  private:
-  // True if the window is fullscreen or fullscreen is pending.
-  bool is_fullscreen_;
-
   // Custom shape of the window. If this is not set then the window has a
   // default shape, usually rectangular.
   scoped_ptr<SkRegion> shape_;