Linux sandbox: better APIs with /proc/ arguments

sandbox/linux/seccomp-bpf/sandbox_bpf_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 "sandbox/linux/seccomp-bpf/sandbox_bpf.h"
 
 #include <fcntl.h>
 #include <unistd.h>
 
 #include <iostream>
@@ skipping 53 matching lines @@
 }
 
 TEST(SandboxBPF, ProcTaskFdDescriptorGetsClosed) {
   int pipe_fds[2];
   ASSERT_EQ(0, pipe(pipe_fds));
   base::ScopedFD read_end(pipe_fds[0]);
   base::ScopedFD write_end(pipe_fds[1]);
 
   {
     SandboxBPF sandbox(nullptr);
-    sandbox.SetProcTaskFd(write_end.Pass());
+    sandbox.SetProcFd(write_end.Pass());
   }
 
   ASSERT_EQ(0, fcntl(read_end.get(), F_SETFL, O_NONBLOCK));
   char c;
   // Check that the sandbox closed the write_end (read will EOF instead of
   // returning EWOULDBLOCK).
   ASSERT_EQ(0, read(read_end.get(), &c, 1));
 }
 
 }  // namespace
 }  // sandbox