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

content/browser/devtools/devtools_agent_host_impl.h

 // 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.
 
 #ifndef CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_AGENT_HOST_IMPL_H_
 #define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_AGENT_HOST_IMPL_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 20 matching lines @@
   // Informs the hosted agent that a client host has detached.
   virtual void Detach() = 0;
 
   // Sends a message to the agent.
   virtual void DispatchProtocolMessage(const std::string& message) = 0;
 
   // Opens the inspector for this host.
   void Inspect(BrowserContext* browser_context);
 
   // DevToolsAgentHost implementation.
-  virtual void AttachClient(DevToolsAgentHostClient* client) override;
-  virtual void DetachClient() override;
-  virtual bool IsAttached() override;
-  virtual void InspectElement(int x, int y) override;
-  virtual std::string GetId() override;
-  virtual WebContents* GetWebContents() override;
-  virtual void DisconnectWebContents() override;
-  virtual void ConnectWebContents(WebContents* wc) override;
-  virtual bool IsWorker() const override;
+  void AttachClient(DevToolsAgentHostClient* client) override;
+  void DetachClient() override;
+  bool IsAttached() override;
+  void InspectElement(int x, int y) override;
+  std::string GetId() override;
+  WebContents* GetWebContents() override;
+  void DisconnectWebContents() override;
+  void ConnectWebContents(WebContents* wc) override;
+  bool IsWorker() const override;
 
  protected:
   DevToolsAgentHostImpl();
-  virtual ~DevToolsAgentHostImpl();
+  ~DevToolsAgentHostImpl() override;
 
   void HostClosed();
   void SendMessageToClient(const std::string& message);
   static void NotifyCallbacks(DevToolsAgentHostImpl* agent_host, bool attached);
 
  private:
   friend class DevToolsAgentHost; // for static methods
 
   const std::string id_;
   DevToolsAgentHostClient* client_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_AGENT_HOST_IMPL_H_