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

content/browser/gpu/gpu_process_host.h

Index: content/browser/gpu/gpu_process_host.h
diff --git a/content/browser/gpu/gpu_process_host.h b/content/browser/gpu/gpu_process_host.h
index b17580b36634cccadf7ed024d1a3c9af77090920..636f61ab19350ed72f2a618db18089bce44069e0 100644
--- a/content/browser/gpu/gpu_process_host.h
+++ b/content/browser/gpu/gpu_process_host.h
@@ -95,7 +95,7 @@ class GpuProcessHost : public BrowserChildProcessHostDelegate,
   int host_id() const { return host_id_; }
 
   // IPC::Sender implementation.
-  virtual bool Send(IPC::Message* msg) override;
+  bool Send(IPC::Message* msg) override;
 
   // Adds a message filter to the GpuProcessHost's channel.
   void AddFilter(IPC::MessageFilter* filter);
@@ -145,7 +145,7 @@ class GpuProcessHost : public BrowserChildProcessHostDelegate,
   static bool ValidateHost(GpuProcessHost* host);
 
   GpuProcessHost(int host_id, GpuProcessKind kind);
-  virtual ~GpuProcessHost();
+  ~GpuProcessHost() override;
 
   bool Init();
 
@@ -153,10 +153,10 @@ class GpuProcessHost : public BrowserChildProcessHostDelegate,
   void RouteOnUIThread(const IPC::Message& message);
 
   // BrowserChildProcessHostDelegate implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
-  virtual void OnChannelConnected(int32 peer_pid) override;
-  virtual void OnProcessLaunched() override;
-  virtual void OnProcessCrashed(int exit_code) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+  void OnChannelConnected(int32 peer_pid) override;
+  void OnProcessLaunched() override;
+  void OnProcessCrashed(int exit_code) override;
 
   // Message handlers.
   void OnInitialized(bool result, const gpu::GPUInfo& gpu_info);