Standardize usage of virtual/override/final specifiers.

ui/views/controls/textfield/textfield_model_unittest.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 <vector>
 
 #include "base/auto_reset.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string16.h"
@@ skipping 32 matching lines @@
 namespace views {
 
 class TextfieldModelTest : public ViewsTestBase,
                            public TextfieldModel::Delegate {
  public:
   TextfieldModelTest()
       : ViewsTestBase(),
         composition_text_confirmed_or_cleared_(false) {
   }
 
-  virtual void OnCompositionTextConfirmedOrCleared() override {
+  void OnCompositionTextConfirmedOrCleared() override {
     composition_text_confirmed_or_cleared_ = true;
   }
 
  protected:
   void ResetModel(TextfieldModel* model) const {
     model->SetText(base::string16());
     model->ClearEditHistory();
   }
 
   bool composition_text_confirmed_or_cleared_;
@@ skipping 1409 matching lines @@
   EXPECT_TRUE(model.Undo());
   EXPECT_STR_EQ("ABCDE", model.text());
   EXPECT_TRUE(model.Redo());
   EXPECT_STR_EQ("1234", model.text());
   EXPECT_FALSE(model.Redo());
 
   // TODO(oshima): Test the behavior with an IME.
 }
 
 }  // namespace views