Small cleanups in the Mojo HTML viewer

mojo/services/html_viewer/websockethandle_impl.h

Index: mojo/services/html_viewer/websockethandle_impl.h
diff --git a/mojo/services/html_viewer/websockethandle_impl.h b/mojo/services/html_viewer/websockethandle_impl.h
index 3e6f91e5260c91eeb40b43a8ad47490c89b88bb4..4796f4d1c82d4a645cbda3edfab03780772732a4 100644
--- a/mojo/services/html_viewer/websockethandle_impl.h
+++ b/mojo/services/html_viewer/websockethandle_impl.h
@@ -28,16 +28,16 @@ class WebSocketHandleImpl : public blink::WebSocketHandle {
  private:
   friend class WebSocketClientImpl;
 
-  ~WebSocketHandleImpl() override;
+  virtual ~WebSocketHandleImpl();
 
   // blink::WebSocketHandle methods:
-  void connect(const blink::WebURL& url,
-               const blink::WebVector<blink::WebString>& protocols,
-               const blink::WebSerializedOrigin& origin,
-               blink::WebSocketHandleClient*) override;
-  void send(bool fin, MessageType, const char* data, size_t size) override;
-  void flowControl(int64_t quota) override;
-  void close(unsigned short code, const blink::WebString& reason) override;
+  virtual void connect(const blink::WebURL& url,
+                       const blink::WebVector<blink::WebString>& protocols,
+                       const blink::WebSerializedOrigin& origin,
+                       blink::WebSocketHandleClient*);
+  virtual void send(bool fin, MessageType, const char* data, size_t size);
+  virtual void flowControl(int64_t quota);
+  virtual void close(unsigned short code, const blink::WebString& reason);
 
   // Called when we finished writing to |send_stream_|.
   void DidWriteToSendStream(bool fin,