Standardize usage of virtual/override/final specifiers.

ui/views/controls/native/native_view_host_test_base.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/controls/native/native_view_host_test_base.h"
 
 #include "ui/views/controls/native/native_view_host.h"
 #include "ui/views/widget/widget.h"
 
 namespace views {
 namespace test {
 
 // Testing wrapper of the NativeViewHost.
 class NativeViewHostTestBase::NativeViewHostTesting : public NativeViewHost {
  public:
   explicit NativeViewHostTesting(NativeViewHostTestBase* owner)
       : owner_(owner) {}
-  virtual ~NativeViewHostTesting() { owner_->host_destroyed_count_++; }
+  ~NativeViewHostTesting() override { owner_->host_destroyed_count_++; }
 
  private:
   NativeViewHostTestBase* owner_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewHostTesting);
 };
 
 NativeViewHostTestBase::NativeViewHostTestBase() : host_destroyed_count_(0) {
 }
 
@@ skipping 42 matching lines @@
 NativeViewHost* NativeViewHostTestBase::ReleaseHost() {
   return host_.release();
 }
 
 NativeViewHostWrapper* NativeViewHostTestBase::GetNativeWrapper() {
   return host_->native_wrapper_.get();
 }
 
 }  // namespace test
 }  // namespace views