Revert of Standardize usage of virtual/override/final in ipc/

ipc/mojo/ipc_mojo_perftest.cc

 // Copyright 2014 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 "base/lazy_instance.h"
 #include "ipc/ipc_perftest_support.h"
 #include "ipc/mojo/ipc_channel_mojo.h"
 #include "ipc/mojo/ipc_channel_mojo_host.h"
 #include "mojo/edk/embedder/test_embedder.h"
 
@@ skipping 11 matching lines @@
 
 base::LazyInstance<MojoInitialier> g_mojo_initializer
     = LAZY_INSTANCE_INITIALIZER;
 
 class MojoChannelPerfTest : public IPC::test::IPCChannelPerfTestBase {
 public:
   typedef IPC::test::IPCChannelPerfTestBase Super;
 
   MojoChannelPerfTest();
 
-  scoped_ptr<IPC::ChannelFactory> CreateChannelFactory(
+  virtual scoped_ptr<IPC::ChannelFactory> CreateChannelFactory(
       const IPC::ChannelHandle& handle,
       base::TaskRunner* runner) override {
     host_.reset(new IPC::ChannelMojoHost(task_runner()));
     return IPC::ChannelMojo::CreateServerFactory(host_->channel_delegate(),
                                                  handle);
   }
 
-  bool DidStartClient() override {
+  virtual bool DidStartClient() override {
     bool ok = IPCTestBase::DidStartClient();
     DCHECK(ok);
     host_->OnClientLaunched(client_process());
     return ok;
   }
 
   void set_io_thread_task_runner(base::TaskRunner* runner) {
     io_thread_task_runner_ = runner;
   }
 
@@ skipping 15 matching lines @@
 TEST_F(MojoChannelPerfTest, ChannelProxyPingPong) {
   RunTestChannelProxyPingPong(GetDefaultTestParams());
 }
 
 class MojoTestClient : public IPC::test::PingPongTestClient {
  public:
   typedef IPC::test::PingPongTestClient SuperType;
 
   MojoTestClient();
 
-  scoped_ptr<IPC::Channel> CreateChannel(IPC::Listener* listener) override;
+  virtual scoped_ptr<IPC::Channel> CreateChannel(
+      IPC::Listener* listener) override;
 };
 
 MojoTestClient::MojoTestClient() {
   g_mojo_initializer.Get();
 }
 
 scoped_ptr<IPC::Channel> MojoTestClient::CreateChannel(
     IPC::Listener* listener) {
   return scoped_ptr<IPC::Channel>(
       IPC::ChannelMojo::Create(NULL,
                                IPCTestBase::GetChannelName("PerformanceClient"),
                                IPC::Channel::MODE_CLIENT,
                                listener));
 }
 
 MULTIPROCESS_IPC_TEST_CLIENT_MAIN(PerformanceClient) {
   MojoTestClient client;
   return client.RunMain();
 }
 
 }  // namespace