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

This patch was automatically generated by applying clang fixit hints
generated by the plugin to the source tree.

BUG=417463
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Review URL: https://codereview.chromium.org/671653002

Cr-Commit-Position: refs/heads/master@{#300476}
diff --git a/chrome/browser/ui/settings_window_manager_browsertest.cc b/chrome/browser/ui/settings_window_manager_browsertest.cc
index e3ed682..4aa0c5c 100644
--- a/chrome/browser/ui/settings_window_manager_browsertest.cc
+++ b/chrome/browser/ui/settings_window_manager_browsertest.cc
@@ -29,9 +29,9 @@
     : public chrome::SettingsWindowManagerObserver {
  public:
   SettingsWindowTestObserver() : browser_(NULL), new_settings_count_(0) {}
-  virtual ~SettingsWindowTestObserver() {}
+  ~SettingsWindowTestObserver() override {}
 
-  virtual void OnNewSettingsWindow(Browser* settings_browser) override {
+  void OnNewSettingsWindow(Browser* settings_browser) override {
     browser_ = settings_browser;
     ++new_settings_count_;
   }
@@ -59,7 +59,7 @@
     settings_manager_->RemoveObserver(&observer_);
   }
 
-  virtual void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(CommandLine* command_line) override {
     command_line->AppendSwitch(::switches::kEnableSettingsWindow);
   }