Standardize usage of virtual/override/final in ui/

ui/base/dragdrop/os_exchange_data_provider_mac.h

 // 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.
 
 #ifndef UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_MAC_H_
 #define UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_MAC_H_
 
 #import "base/mac/scoped_nsobject.h"
 #include "ui/base/dragdrop/os_exchange_data.h"
 
 @class NSPasteboard;
 
 namespace ui {
 
 // OSExchangeData::Provider implementation for Mac.
 class UI_BASE_EXPORT OSExchangeDataProviderMac
     : public OSExchangeData::Provider {
  public:
   OSExchangeDataProviderMac();
   explicit OSExchangeDataProviderMac(NSPasteboard* pasteboard);
-  virtual ~OSExchangeDataProviderMac();
+  ~OSExchangeDataProviderMac() override;
 
   // Overridden from OSExchangeData::Provider:
-  virtual Provider* Clone() const override;
-  virtual void MarkOriginatedFromRenderer() override;
-  virtual bool DidOriginateFromRenderer() const override;
-  virtual void SetString(const base::string16& data) override;
-  virtual void SetURL(const GURL& url, const base::string16& title) override;
-  virtual void SetFilename(const base::FilePath& path) override;
-  virtual void SetFilenames(const std::vector<FileInfo>& filenames) override;
-  virtual void SetPickledData(const OSExchangeData::CustomFormat& format,
-                              const Pickle& data) override;
-  virtual bool GetString(base::string16* data) const override;
-  virtual bool GetURLAndTitle(OSExchangeData::FilenameToURLPolicy policy,
-                              GURL* url,
-                              base::string16* title) const override;
-  virtual bool GetFilename(base::FilePath* path) const override;
-  virtual bool GetFilenames(std::vector<FileInfo>* filenames) const override;
-  virtual bool GetPickledData(const OSExchangeData::CustomFormat& format,
-                              Pickle* data) const override;
-  virtual bool HasString() const override;
-  virtual bool HasURL(
-      OSExchangeData::FilenameToURLPolicy policy) const override;
-  virtual bool HasFile() const override;
-  virtual bool HasCustomFormat(
+  Provider* Clone() const override;
+  void MarkOriginatedFromRenderer() override;
+  bool DidOriginateFromRenderer() const override;
+  void SetString(const base::string16& data) override;
+  void SetURL(const GURL& url, const base::string16& title) override;
+  void SetFilename(const base::FilePath& path) override;
+  void SetFilenames(const std::vector<FileInfo>& filenames) override;
+  void SetPickledData(const OSExchangeData::CustomFormat& format,
+                      const Pickle& data) override;
+  bool GetString(base::string16* data) const override;
+  bool GetURLAndTitle(OSExchangeData::FilenameToURLPolicy policy,
+                      GURL* url,
+                      base::string16* title) const override;
+  bool GetFilename(base::FilePath* path) const override;
+  bool GetFilenames(std::vector<FileInfo>* filenames) const override;
+  bool GetPickledData(const OSExchangeData::CustomFormat& format,
+                      Pickle* data) const override;
+  bool HasString() const override;
+  bool HasURL(OSExchangeData::FilenameToURLPolicy policy) const override;
+  bool HasFile() const override;
+  bool HasCustomFormat(
       const OSExchangeData::CustomFormat& format) const override;
 
  private:
   base::scoped_nsobject<NSPasteboard> pasteboard_;
 
   DISALLOW_COPY_AND_ASSIGN(OSExchangeDataProviderMac);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_MAC_H_