Update modules classes to use OVERRIDE / FINAL when needed

Source/modules/websockets/WorkerThreadableWebSocketChannel.h

Index: Source/modules/websockets/WorkerThreadableWebSocketChannel.h
diff --git a/Source/modules/websockets/WorkerThreadableWebSocketChannel.h b/Source/modules/websockets/WorkerThreadableWebSocketChannel.h
index e8d897e30763bb0c68f4e40393a788af19cee9f7..bce1650884e01e71569c10b00b5ec13b65260b4e 100644
--- a/Source/modules/websockets/WorkerThreadableWebSocketChannel.h
+++ b/Source/modules/websockets/WorkerThreadableWebSocketChannel.h
@@ -54,7 +54,7 @@ class WorkerGlobalScope;
 class WorkerLoaderProxy;
 class WorkerRunLoop;
 
-class WorkerThreadableWebSocketChannel : public RefCounted<WorkerThreadableWebSocketChannel>, public WebSocketChannel {
+class WorkerThreadableWebSocketChannel FINAL : public RefCounted<WorkerThreadableWebSocketChannel>, public WebSocketChannel {
     WTF_MAKE_FAST_ALLOCATED;
 public:
     static PassRefPtr<WebSocketChannel> create(WorkerGlobalScope* workerGlobalScope, WebSocketChannelClient* client, const String& taskMode, const String& sourceURL, unsigned lineNumber)
@@ -79,7 +79,7 @@ public:
 
     // Generated by the bridge. The Peer and its bridge should have identical
     // lifetimes.
-    class Peer : public WebSocketChannelClient {
+    class Peer FINAL : public WebSocketChannelClient {
         WTF_MAKE_NONCOPYABLE(Peer); WTF_MAKE_FAST_ALLOCATED;
     public:
         // sourceURLAtConnection and lineNumberAtConnection parameters may
@@ -88,7 +88,7 @@ public:
         {
             return new Peer(clientWrapper, loaderProxy, context, taskMode, sourceURLAtConnection, lineNumberAtConnection);
         }
-        ~Peer();
+        virtual ~Peer();
 
         void connect(const KURL&, const String& protocol);
         void send(const String& message);