Standardize usage of virtual/override/final in ui/

ui/base/accelerators/accelerator_manager_unittest.cc

Index: ui/base/accelerators/accelerator_manager_unittest.cc
diff --git a/ui/base/accelerators/accelerator_manager_unittest.cc b/ui/base/accelerators/accelerator_manager_unittest.cc
index 979ff4a0481319e7d7310c64776277d4dcc4d48d..ec5a47b1170ee59336667bb0ec0cf88a6cdcbe82 100644
--- a/ui/base/accelerators/accelerator_manager_unittest.cc
+++ b/ui/base/accelerators/accelerator_manager_unittest.cc
@@ -17,7 +17,7 @@ namespace {
 class TestTarget : public AcceleratorTarget {
  public:
   TestTarget() : accelerator_pressed_count_(0) {}
-  virtual ~TestTarget() {}
+  ~TestTarget() override {}
 
   int accelerator_pressed_count() const {
     return accelerator_pressed_count_;
@@ -28,8 +28,8 @@ class TestTarget : public AcceleratorTarget {
   }
 
   // Overridden from AcceleratorTarget:
-  virtual bool AcceleratorPressed(const Accelerator& accelerator) override;
-  virtual bool CanHandleAccelerators() const override;
+  bool AcceleratorPressed(const Accelerator& accelerator) override;
+  bool CanHandleAccelerators() const override;
 
  private:
   int accelerator_pressed_count_;