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

chrome/browser/undo/undo_manager_test.cc

 // Copyright 2013 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 "base/auto_reset.h"
 #include "chrome/browser/undo/undo_manager.h"
 #include "chrome/browser/undo/undo_manager_observer.h"
 #include "chrome/browser/undo/undo_operation.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 18 matching lines @@
 
   int undo_operation_count_;
   int redo_operation_count_;
 };
 
 // TestUndoOperation -----------------------------------------------------------
 
 class TestUndoOperation : public UndoOperation {
  public:
   explicit TestUndoOperation(TestUndoService* undo_service);
-  virtual ~TestUndoOperation();
+  ~TestUndoOperation() override;
 
   // UndoOperation:
-  virtual void Undo() override;
-  virtual int GetUndoLabelId() const override;
-  virtual int GetRedoLabelId() const override;
+  void Undo() override;
+  int GetUndoLabelId() const override;
+  int GetRedoLabelId() const override;
 
  private:
   TestUndoService* undo_service_;
 
   DISALLOW_COPY_AND_ASSIGN(TestUndoOperation);
 };
 
 TestUndoOperation::TestUndoOperation(TestUndoService* undo_service)
       : undo_service_(undo_service) {
 }
@@ skipping 41 matching lines @@
 }
 
 // TestObserver ----------------------------------------------------------------
 
 class TestObserver : public UndoManagerObserver {
  public:
   TestObserver() : state_change_count_(0) {}
   // Returns the number of state change callbacks
   int state_change_count() { return state_change_count_; }
 
-  virtual void OnUndoManagerStateChange() override { ++state_change_count_; }
+  void OnUndoManagerStateChange() override { ++state_change_count_; }
 
  private:
   int state_change_count_;
 
   DISALLOW_COPY_AND_ASSIGN(TestObserver);
 };
 
 // Tests -----------------------------------------------------------------------
 
 TEST(UndoServiceTest, AddUndoActions) {
@@ skipping 139 matching lines @@
   undo_service.undo_manager_.Redo();
   int callback_count_after_redo = observer.state_change_count();
   EXPECT_GT(callback_count_after_redo, callback_count_after_undo);
 
   undo_service.undo_manager_.RemoveObserver(&observer);
   undo_service.undo_manager_.Undo();
   EXPECT_EQ(callback_count_after_redo, observer.state_change_count());
 }
 
 } // namespace