Define magic descriptors in one place.

content/browser/child_process_launcher.cc

 // Copyright (c) 2012 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 "content/browser/child_process_launcher.h"
 
 #include <utility>  // For std::pair.
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 17 matching lines @@
 #include "content/public/common/sandboxed_process_launcher_delegate.h"
 #elif defined(OS_MACOSX)
 #include "content/browser/mach_broker_mac.h"
 #elif defined(OS_ANDROID)
 #include "base/android/jni_android.h"
 #include "content/browser/android/child_process_launcher_android.h"
 #elif defined(OS_POSIX)
 #include "base/memory/singleton.h"
 #include "content/browser/renderer_host/render_sandbox_host_linux.h"
 #include "content/browser/zygote_host/zygote_host_impl_linux.h"
+#include "content/common/child_process_sandbox_support_impl_linux.h"
 #endif
 
 #if defined(OS_POSIX)
 #include "base/posix/global_descriptors.h"
 #endif
 
 namespace content {
 
 // Having the functionality of ChildProcessLauncher be in an internal
 // ref counted object allows us to automatically terminate the process when the
@@ skipping 201 matching lines @@
             files_to_register[i].id +
                 base::GlobalDescriptors::kBaseDescriptor));
       }
 
 #if !defined(OS_MACOSX)
       if (process_type == switches::kRendererProcess) {
         const int sandbox_fd =
             RenderSandboxHostLinux::GetInstance()->GetRendererSocket();
         fds_to_map.push_back(std::make_pair(
             sandbox_fd,
-            kSandboxIPCChannel + base::GlobalDescriptors::kBaseDescriptor));
+            GetSandboxFD()));
       }
 #endif  // defined(OS_MACOSX)
 
       // Actually launch the app.
       base::LaunchOptions options;
       options.environ = env;
       options.fds_to_remap = &fds_to_map;
 
 #if defined(OS_MACOSX)
       // Hold the MachBroker lock for the duration of LaunchProcess. The child
@@ skipping 223 matching lines @@
           GetHandle(), background));
 }
 
 void ChildProcessLauncher::SetTerminateChildOnShutdown(
   bool terminate_on_shutdown) {
   if (context_.get())
     context_->set_terminate_child_on_shutdown(terminate_on_shutdown);
 }
 
 }  // namespace content