Update {virtual,override} to follow C++11 style in net.

net/websockets/websocket_channel_test.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/websockets/websocket_channel.h"
 
 #include <limits.h>
 #include <string.h>
 
 #include <iostream>
@@ skipping 155 matching lines @@
   ChannelState OnStartOpeningHandshake(
       scoped_ptr<WebSocketHandshakeRequestInfo>) override {
     OnStartOpeningHandshakeCalled();
     return CHANNEL_ALIVE;
   }
   ChannelState OnFinishOpeningHandshake(
       scoped_ptr<WebSocketHandshakeResponseInfo>) override {
     OnFinishOpeningHandshakeCalled();
     return CHANNEL_ALIVE;
   }
-  virtual ChannelState OnSSLCertificateError(
+  ChannelState OnSSLCertificateError(
       scoped_ptr<SSLErrorCallbacks> ssl_error_callbacks,
       const GURL& url,
       const SSLInfo& ssl_info,
       bool fatal) override {
     OnSSLCertificateErrorCalled(
         ssl_error_callbacks.get(), url, ssl_info, fatal);
     return CHANNEL_ALIVE;
   }
 
   MOCK_METHOD0(OnStartOpeningHandshakeCalled, void());  // NOLINT
@@ skipping 3225 matching lines @@
   channel_->StartClosingHandshake(kWebSocketNormalClosure, "OK");
   ASSERT_TRUE(read_frames);
   // Provide the "Close" message from the server.
   *read_frames = CreateFrameVector(frames);
   read_callback.Run(OK);
   completion.WaitForResult();
 }
 
 }  // namespace
 }  // namespace net