Standardize usage of virtual/override/final specifiers.

ui/views/controls/scroll_view_unittest.cc

 // Copyright (c) 2012 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/scroll_view.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/views/controls/scrollbar/overlay_scroll_bar.h"
 #include "ui/views/test/test_views.h"
 
 namespace views {
 
 namespace {
 
 const int kWidth = 100;
 const int kMinHeight = 50;
 const int kMaxHeight = 100;
 
 // View implementation that allows setting the preferred size.
 class CustomView : public View {
  public:
   CustomView() {}
 
   void SetPreferredSize(const gfx::Size& size) {
     preferred_size_ = size;
     PreferredSizeChanged();
   }
 
-  virtual gfx::Size GetPreferredSize() const override {
-    return preferred_size_;
-  }
+  gfx::Size GetPreferredSize() const override { return preferred_size_; }
 
-  virtual void Layout() override {
+  void Layout() override {
     gfx::Size pref = GetPreferredSize();
     int width = pref.width();
     int height = pref.height();
     if (parent()) {
       width = std::max(parent()->width(), width);
       height = std::max(parent()->height(), height);
     }
     SetBounds(x(), y(), width, height);
   }
 
@@ skipping 325 matching lines @@
   EXPECT_FALSE(corner_view->parent());
 
   // Corner view should reappear when both scrollbars reappear.
   contents->SetBounds(0, 0, 200, 200);
   scroll_view.Layout();
   EXPECT_EQ(&scroll_view, corner_view->parent());
   EXPECT_TRUE(corner_view->visible());
 }
 
 }  // namespace views