OS_LINUX and OS_ANDROID are mutually exclusive.

services/shell/runner/host/child_process_host.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 "services/shell/runner/host/child_process_host.h"
 
 #include <stdint.h>
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/process/kill.h"
 #include "base/process/launch.h"
 #include "base/synchronization/lock.h"
 #include "base/task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "mojo/edk/embedder/embedder.h"
 #include "mojo/public/cpp/bindings/interface_ptr_info.h"
 #include "mojo/public/cpp/system/core.h"
 #include "services/shell/native_runner_delegate.h"
 #include "services/shell/runner/common/client_util.h"
 #include "services/shell/runner/common/switches.h"
 
-#if defined(OS_LINUX) && !defined(OS_ANDROID)
+#if defined(OS_LINUX)
 #include "sandbox/linux/services/namespace_sandbox.h"
 #endif
 
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
 #endif
 
 #if defined(OS_MACOSX)
 #include "services/shell/runner/host/mach_broker.h"
 #endif
@@ skipping 130 matching lines @@
     handle_passing_info_.push_back(options.stderr_handle);
   }
 #elif defined(OS_POSIX)
   handle_passing_info_.push_back(std::make_pair(STDIN_FILENO, STDIN_FILENO));
   handle_passing_info_.push_back(std::make_pair(STDOUT_FILENO, STDOUT_FILENO));
   handle_passing_info_.push_back(std::make_pair(STDERR_FILENO, STDERR_FILENO));
   options.fds_to_remap = &handle_passing_info_;
 #endif
   DVLOG(2) << "Launching child with command line: "
            << child_command_line->GetCommandLineString();
-#if defined(OS_LINUX) && !defined(OS_ANDROID)
+#if defined(OS_LINUX)
   if (start_sandboxed_) {
     child_process_ =
         sandbox::NamespaceSandbox::LaunchProcess(*child_command_line, options);
     if (!child_process_.IsValid()) {
       LOG(ERROR) << "Starting the process with a sandbox failed. Missing kernel"
                  << " support.";
     }
   } else
 #endif
   {
@@ skipping 14 matching lines @@
           child_process_.Handle(),
           mojo::edk::ScopedPlatformHandle(mojo::edk::PlatformHandle(
               mojo_ipc_channel_->PassServerHandle().release().handle)),
           child_token_);
     }
   }
   start_child_process_event_.Signal();
 }
 
 }  // namespace shell