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

content/browser/plugin_process_host.h

Index: content/browser/plugin_process_host.h
diff --git a/content/browser/plugin_process_host.h b/content/browser/plugin_process_host.h
index 2b4f9dfa5f39c251d6726b53043630b67c12650e..1e8b67812ac64446a2cb2a35b38f6106ac717c3e 100644
--- a/content/browser/plugin_process_host.h
+++ b/content/browser/plugin_process_host.h
@@ -75,10 +75,10 @@ class CONTENT_EXPORT PluginProcessHost : public BrowserChildProcessHostDelegate,
   };
 
   PluginProcessHost();
-  virtual ~PluginProcessHost();
+  ~PluginProcessHost() override;
 
   // IPC::Sender implementation:
-  virtual bool Send(IPC::Message* message) override;
+  bool Send(IPC::Message* message) override;
 
   // Initialize the new plugin process, returning true on success. This must
   // be called before the object can be used.
@@ -87,9 +87,9 @@ class CONTENT_EXPORT PluginProcessHost : public BrowserChildProcessHostDelegate,
   // Force the plugin process to shutdown (cleanly).
   void ForceShutdown();
 
-  virtual bool OnMessageReceived(const IPC::Message& msg) override;
-  virtual void OnChannelConnected(int32 peer_pid) override;
-  virtual void OnChannelError() override;
+  bool OnMessageReceived(const IPC::Message& msg) override;
+  void OnChannelConnected(int32 peer_pid) override;
+  void OnChannelError() override;
 
   // Tells the plugin process to create a new channel for communication with a
   // renderer.  When the plugin process responds with the channel name,
@@ -147,8 +147,8 @@ class CONTENT_EXPORT PluginProcessHost : public BrowserChildProcessHostDelegate,
   void OnPluginSetCursorVisibility(bool visible);
 #endif
 
-  virtual bool CanShutdown() override;
-  virtual void OnProcessCrashed(int exit_code) override;
+  bool CanShutdown() override;
+  void OnProcessCrashed(int exit_code) override;
 
   void CancelRequests();