Delete tab pulsing feature.

https://chromium-review.googlesource.com/c/chromium/src/+/1407958

atom/browser/ui/views/menu_delegate.cc

@@ -88,10 +88,6 @@ bool MenuDelegate::IsItemChecked(int id) const {
   return adapter_->IsItemChecked(id);
 }
 
-void MenuDelegate::SelectionChanged(views::MenuItemView* menu) {
-  adapter_->SelectionChanged(menu);
-}
-
 void MenuDelegate::WillShowMenu(views::MenuItemView* menu) {
   adapter_->WillShowMenu(menu);
 }

atom/browser/ui/views/menu_delegate.h

@@ -50,7 +50,6 @@ class MenuDelegate : public views::MenuDelegate {
   bool IsCommandEnabled(int id) const override;
   bool IsCommandVisible(int id) const override;
   bool IsItemChecked(int id) const override;
-  void SelectionChanged(views::MenuItemView* menu) override;
   void WillShowMenu(views::MenuItemView* menu) override;
   void WillHideMenu(views::MenuItemView* menu) override;
   void OnMenuClosed(views::MenuItemView* menu) override;