Fix GN missing headers in //base

base/debug/stack_trace_posix.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 "base/debug/stack_trace.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <stddef.h>
@@ skipping 15 matching lines @@
 #include <cxxabi.h>
 #endif
 #if !defined(__UCLIBC__)
 #include <execinfo.h>
 #endif
 
 #if defined(OS_MACOSX)
 #include <AvailabilityMacros.h>
 #endif
 
+#if defined(OS_LINUX)
+#include "base/debug/proc_maps_linux.h"
+#endif
+
 #include "base/debug/debugger.h"
-#include "base/debug/proc_maps_linux.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/memory/free_deleter.h"
 #include "base/memory/singleton.h"
 #include "base/numerics/safe_conversions.h"
 #include "base/posix/eintr_wrapper.h"
 #include "base/strings/string_number_conversions.h"
 #include "build/build_config.h"
 
 #if defined(USE_SYMBOLIZE)
@@ skipping 757 matching lines @@
     *ptr = *start;
     *start++ = ch;
   }
   return buf;
 }
 
 }  // namespace internal
 
 }  // namespace debug
 }  // namespace base