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

content/browser/renderer_host/pepper/pepper_file_system_browser_host.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_FILE_SYSTEM_BROWSER_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_FILE_SYSTEM_BROWSER_HOST_H_
 
 #include <queue>
 #include <string>
 #include <vector>
@@ skipping 19 matching lines @@
 class CONTENT_EXPORT PepperFileSystemBrowserHost
     : public ppapi::host::ResourceHost,
       public base::SupportsWeakPtr<PepperFileSystemBrowserHost> {
  public:
   // Creates a new PepperFileSystemBrowserHost for a file system of a given
   // |type|. The host must be opened before use.
   PepperFileSystemBrowserHost(BrowserPpapiHost* host,
                               PP_Instance instance,
                               PP_Resource resource,
                               PP_FileSystemType type);
-  virtual ~PepperFileSystemBrowserHost();
+  ~PepperFileSystemBrowserHost() override;
 
   // Opens the PepperFileSystemBrowserHost to use an existing file system at the
   // given |root_url|. The file system at |root_url| must already be opened and
   // have the type given by GetType().
   // Calls |callback| when complete.
   void OpenExisting(const GURL& root_url, const base::Closure& callback);
 
   // ppapi::host::ResourceHost overrides.
-  virtual int32_t OnResourceMessageReceived(
+  int32_t OnResourceMessageReceived(
       const IPC::Message& msg,
       ppapi::host::HostMessageContext* context) override;
-  virtual bool IsFileSystemHost() override;
+  bool IsFileSystemHost() override;
 
   // Supports FileRefs direct access on the host side.
   PP_FileSystemType GetType() const { return type_; }
   bool IsOpened() const { return opened_; }
   GURL GetRootUrl() const { return root_url_; }
   scoped_refptr<storage::FileSystemContext> GetFileSystemContext() const {
     return file_system_context_;
   }
 
   // Supports FileIOs direct access on the host side.
@@ skipping 102 matching lines @@
   std::string fsid_;  // used only for isolated filesystems.
 
   base::WeakPtrFactory<PepperFileSystemBrowserHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperFileSystemBrowserHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_FILE_SYSTEM_BROWSER_HOST_H_