Standardize usage of virtual/override/final specifiers.

ash/system/user/user_card_view.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 "ash/system/user/user_card_view.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "ash/session/session_state_delegate.h"
@@ skipping 108 matching lines @@
 };
 #endif
 
 // The user details shown in public account mode. This is essentially a label
 // but with custom painting code as the text is styled with multiple colors and
 // contains a link.
 class PublicAccountUserDetails : public views::View,
                                  public views::LinkListener {
  public:
   PublicAccountUserDetails(int max_width);
-  virtual ~PublicAccountUserDetails();
+  ~PublicAccountUserDetails() override;
 
  private:
   // Overridden from views::View.
-  virtual void Layout() override;
-  virtual gfx::Size GetPreferredSize() const override;
-  virtual void OnPaint(gfx::Canvas* canvas) override;
+  void Layout() override;
+  gfx::Size GetPreferredSize() const override;
+  void OnPaint(gfx::Canvas* canvas) override;
 
   // Overridden from views::LinkListener.
-  virtual void LinkClicked(views::Link* source, int event_flags) override;
+  void LinkClicked(views::Link* source, int event_flags) override;
 
   // Calculate a preferred size that ensures the label text and the following
   // link do not wrap over more than three lines in total for aesthetic reasons
   // if possible.
   void CalculatePreferredSize(int max_allowed_width);
 
   base::string16 text_;
   views::Link* learn_more_;
   gfx::Size preferred_size_;
   ScopedVector<gfx::RenderText> lines_;
@@ skipping 320 matching lines @@
     content::BrowserContext* context =
         delegate->GetBrowserContextByIndex(multiprofile_index);
     icon->SetImage(delegate->GetUserInfo(context)->GetImage(),
                    gfx::Size(kTrayAvatarSize, kTrayAvatarSize));
   }
   return icon;
 }
 
 }  // namespace tray
 }  // namespace ash