Standardize usage of virtual/override/final in chrome/browser/ui/

chrome/browser/ui/cocoa/history_menu_bridge_unittest.mm

Index: chrome/browser/ui/cocoa/history_menu_bridge_unittest.mm
diff --git a/chrome/browser/ui/cocoa/history_menu_bridge_unittest.mm b/chrome/browser/ui/cocoa/history_menu_bridge_unittest.mm
index 51894fb1e3b7c47d2cdd62a902d9badd6952ac15..3d15b2959e1ff837dc650fc38a9a684bb75187fb 100644
--- a/chrome/browser/ui/cocoa/history_menu_bridge_unittest.mm
+++ b/chrome/browser/ui/cocoa/history_menu_bridge_unittest.mm
@@ -37,9 +37,7 @@ class MockBridge : public HistoryMenuBridge {
       : HistoryMenuBridge(profile),
         menu_([[NSMenu alloc] initWithTitle:@"History"]) {}
 
-  virtual NSMenu* HistoryMenu() override {
-    return menu_.get();
-  }
+  NSMenu* HistoryMenu() override { return menu_.get(); }
 
  private:
   base::scoped_nsobject<NSMenu> menu_;