SocketDescriptor should not be used as a boolean

mojo/shell/domain_socket/unix_domain_server_socket_posix_unittest.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 "mojo/shell/domain_socket/unix_domain_server_socket_posix.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
@@ skipping 65 matching lines @@
   EXPECT_EQ(net::OK, server_socket.ListenWithPath(socket_path_, 1));
 }
 
 TEST_F(UnixDomainServerSocketTest, AcceptWithForbiddenUser) {
   const bool kUseAbstractNamespace = false;
 
   UnixDomainServerSocket server_socket(CreateAuthCallback(false),
                                        kUseAbstractNamespace);
   EXPECT_EQ(net::OK, server_socket.ListenWithPath(socket_path_, 1));
 
-  SocketDescriptor accepted_socket;
+  SocketDescriptor accepted_socket = kInvalidSocket;
   TestCompletionCallback accept_callback;
   EXPECT_EQ(net::ERR_IO_PENDING,
             server_socket.Accept(&accepted_socket, accept_callback.callback()));
-  EXPECT_FALSE(accepted_socket);
+  EXPECT_EQ(accepted_socket, kInvalidSocket);
 
   UnixDomainClientSocket client_socket(socket_path_, kUseAbstractNamespace);
   EXPECT_FALSE(client_socket.IsConnected());
 
   // Connect() will return net::OK before the server rejects the connection.
   TestCompletionCallback connect_callback;
   int rv = connect_callback.GetResult(
       client_socket.Connect(connect_callback.callback()));
   ASSERT_EQ(net::OK, rv);
 
   // Run message loop so server can process incoming connection attempt.
   {
     base::RunLoop run_loop;
     run_loop.RunUntilIdle();
   }
   EXPECT_FALSE(client_socket.IsConnected());
 
   // The server socket should not have called |accept_callback| or modified
   // |accepted_socket|.
   EXPECT_FALSE(accept_callback.have_result());
-  EXPECT_FALSE(accepted_socket);
+  EXPECT_EQ(accepted_socket, kInvalidSocket);
 }
 
 // Normal cases including read/write are tested by UnixDomainClientSocketTest.
 
 }  // namespace shell
 }  // namespace mojo