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

ipc/unix_domain_socket_util_unittest.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 <sys/socket.h>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
 #include "ipc/unix_domain_socket_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
 
 class SocketAcceptor : public base::MessageLoopForIO::Watcher {
  public:
   SocketAcceptor(int fd, base::MessageLoopProxy* target_thread)
       : server_fd_(-1),
         target_thread_(target_thread),
         started_watching_event_(false, false),
         accepted_event_(false, false) {
     target_thread->PostTask(FROM_HERE,
         base::Bind(&SocketAcceptor::StartWatching, base::Unretained(this), fd));
   }
 
-  ~SocketAcceptor() override { Close(); }
+  virtual ~SocketAcceptor() {
+    Close();
+  }
 
   int server_fd() const { return server_fd_; }
 
   void WaitUntilReady() {
     started_watching_event_.Wait();
   }
 
   void WaitForAccept() {
     accepted_event_.Wait();
   }
@@ skipping 10 matching lines @@
   void StartWatching(int fd) {
     watcher_.reset(new base::MessageLoopForIO::FileDescriptorWatcher);
     base::MessageLoopForIO::current()->WatchFileDescriptor(
         fd, true, base::MessageLoopForIO::WATCH_READ, watcher_.get(), this);
     started_watching_event_.Signal();
   }
   void StopWatching(base::MessageLoopForIO::FileDescriptorWatcher* watcher) {
     watcher->StopWatchingFileDescriptor();
     delete watcher;
   }
-  void OnFileCanReadWithoutBlocking(int fd) override {
+  virtual void OnFileCanReadWithoutBlocking(int fd) override {
     ASSERT_EQ(-1, server_fd_);
     IPC::ServerAcceptConnection(fd, &server_fd_);
     watcher_->StopWatchingFileDescriptor();
     accepted_event_.Signal();
   }
-  void OnFileCanWriteWithoutBlocking(int fd) override {}
+  virtual void OnFileCanWriteWithoutBlocking(int fd) override {}
 
   int server_fd_;
   base::MessageLoopProxy* target_thread_;
   scoped_ptr<base::MessageLoopForIO::FileDescriptorWatcher> watcher_;
   base::WaitableEvent started_watching_event_;
   base::WaitableEvent accepted_event_;
 
   DISALLOW_COPY_AND_ASSIGN(SocketAcceptor);
 };
 
@@ skipping 86 matching lines @@
       HANDLE_EINTR(send(connection.client_fd(), buffer, buf_len, 0));
   ASSERT_EQ(buf_len, sent_bytes);
   char recv_buf[sizeof(buffer)];
   size_t received_bytes =
       HANDLE_EINTR(recv(connection.server_fd(), recv_buf, buf_len, 0));
   ASSERT_EQ(buf_len, received_bytes);
   ASSERT_EQ(0, memcmp(recv_buf, buffer, buf_len));
 }
 
 }  // namespace