Standardize usage of virtual/override/final in remoting/

remoting/client/plugin/pepper_plugin_thread_delegate.h

Index: remoting/client/plugin/pepper_plugin_thread_delegate.h
diff --git a/remoting/client/plugin/pepper_plugin_thread_delegate.h b/remoting/client/plugin/pepper_plugin_thread_delegate.h
index aa3ce33e0a0bbf6a3109f9938e08a25097a673c7..eb6ddb34db372eb4eeb2fbfa2b2be3547d9bf6a9 100644
--- a/remoting/client/plugin/pepper_plugin_thread_delegate.h
+++ b/remoting/client/plugin/pepper_plugin_thread_delegate.h
@@ -16,10 +16,11 @@ namespace remoting {
 class PepperPluginThreadDelegate : public PluginThreadTaskRunner::Delegate {
  public:
   PepperPluginThreadDelegate();
-  virtual ~PepperPluginThreadDelegate();
+  ~PepperPluginThreadDelegate() override;
 
-  virtual bool RunOnPluginThread(
-      base::TimeDelta delay, void(CDECL function)(void*), void* data) override;
+  bool RunOnPluginThread(base::TimeDelta delay,
+                         void(CDECL function)(void*),
+                         void* data) override;
 
  private:
   pp::Core* core_;