OS_LINUX and OS_ANDROID are mutually exclusive.

services/shell/runner/host/child_process_base.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_base.h"
 
 #include "base/command_line.h"
 #include "base/debug/stack_trace.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "mojo/edk/embedder/embedder.h"
 #include "mojo/edk/embedder/process_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 "base/rand_util.h"
 #include "base/sys_info.h"
 #include "services/shell/runner/host/linux_sandbox.h"
 #endif
 
 #if defined(OS_MACOSX)
 #include "services/shell/runner/host/mach_broker.h"
 #endif
 
 namespace shell {
 
 namespace {
 
-#if defined(OS_LINUX) && !defined(OS_ANDROID)
+#if defined(OS_LINUX)
 std::unique_ptr<LinuxSandbox> InitializeSandbox() {
   using sandbox::syscall_broker::BrokerFilePermission;
   // Warm parts of base in the copy of base in the mojo runner.
   base::RandUint64();
   base::SysInfo::AmountOfPhysicalMemory();
   base::SysInfo::NumberOfProcessors();
 
   // TODO(erg,jln): Allowing access to all of /dev/shm/ makes it easy to
   // spy on other shared memory using processes. This is a temporary hack
   // so that we have some sandbox until we have proper shared memory
@@ skipping 60 matching lines @@
 #if defined(OS_MACOSX)
   // Send our task port to the parent.
   MachBroker::SendTaskPortToParent();
 #endif
 
 #if !defined(OFFICIAL_BUILD)
   // Initialize stack dumping just before initializing sandbox to make
   // sure symbol names in all loaded libraries will be cached.
   base::debug::EnableInProcessStackDumping();
 #endif
-#if defined(OS_LINUX) && !defined(OS_ANDROID)
+#if defined(OS_LINUX)
   std::unique_ptr<LinuxSandbox> sandbox;
   const base::CommandLine& command_line =
       *base::CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(switches::kEnableSandbox))
     sandbox = InitializeSandbox();
 #endif
 
   ScopedAppContext app_context;
   callback.Run(GetServiceRequestFromCommandLine());
 }
 
 }  // namespace shell