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

content/renderer/pepper/pepper_proxy_channel_delegate_impl.h

Index: content/renderer/pepper/pepper_proxy_channel_delegate_impl.h
diff --git a/content/renderer/pepper/pepper_proxy_channel_delegate_impl.h b/content/renderer/pepper/pepper_proxy_channel_delegate_impl.h
index a7e6765a3c98ac62a737b19248a748d7e22e502b..e6b9cd51ad641dc217123ad42e3b27d1d8e81a37 100644
--- a/content/renderer/pepper/pepper_proxy_channel_delegate_impl.h
+++ b/content/renderer/pepper/pepper_proxy_channel_delegate_impl.h
@@ -13,12 +13,12 @@ namespace content {
 class PepperProxyChannelDelegateImpl
     : public ppapi::proxy::ProxyChannel::Delegate {
  public:
-  virtual ~PepperProxyChannelDelegateImpl();
+  ~PepperProxyChannelDelegateImpl() override;
 
   // ProxyChannel::Delegate implementation.
-  virtual base::MessageLoopProxy* GetIPCMessageLoop() override;
-  virtual base::WaitableEvent* GetShutdownEvent() override;
-  virtual IPC::PlatformFileForTransit ShareHandleWithRemote(
+  base::MessageLoopProxy* GetIPCMessageLoop() override;
+  base::WaitableEvent* GetShutdownEvent() override;
+  IPC::PlatformFileForTransit ShareHandleWithRemote(
       base::PlatformFile handle,
       base::ProcessId remote_pid,
       bool should_close_source) override;