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

ipc/mojo/ipc_channel_mojo.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 "ipc/mojo/ipc_channel_mojo.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/lazy_instance.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/mojo/ipc_channel_mojo_readers.h"
 #include "ipc/mojo/ipc_mojo_bootstrap.h"
 #include "mojo/edk/embedder/embedder.h"
 
 #if defined(OS_POSIX) && !defined(OS_NACL)
 #include "ipc/file_descriptor_set_posix.h"
 #endif
 
 namespace IPC {
 
 namespace {
 
 class MojoChannelFactory : public ChannelFactory {
  public:
   MojoChannelFactory(ChannelMojo::Delegate* delegate,
                      ChannelHandle channel_handle,
                      Channel::Mode mode)
       : delegate_(delegate), channel_handle_(channel_handle), mode_(mode) {}
 
-  std::string GetName() const override { return channel_handle_.name; }
+  virtual std::string GetName() const override {
+    return channel_handle_.name;
+  }
 
-  scoped_ptr<Channel> BuildChannel(Listener* listener) override {
+  virtual scoped_ptr<Channel> BuildChannel(Listener* listener) override {
     return ChannelMojo::Create(delegate_, channel_handle_, mode_, listener);
   }
 
  private:
   ChannelMojo::Delegate* delegate_;
   ChannelHandle channel_handle_;
   Channel::Mode mode_;
 };
 
 } // namespace
@@ skipping 236 matching lines @@
 
     fdset->CommitAll();
   }
 
   return MOJO_RESULT_OK;
 }
 
 #endif  // defined(OS_POSIX) && !defined(OS_NACL)
 
 }  // namespace IPC